The in vitro formation of clusters consisting of a cell (usually a lymphocyte) surrounded by antigenic cells or antigen-bearing particles (usually erythrocytes, which may or may not be coated with antibody or antibody and complement). The rosette-forming cell may be an antibody-forming cell, a memory cell, a T-cell, a cell bearing surface cytophilic antibodies, or a monocyte possessing Fc receptors. Rosette formation can be used to identify specific populations of these cells.
A method for the detection of very small quantities of antibody in which the antigen-antibody-complement complex adheres to indicator cells, usually primate erythrocytes or nonprimate blood platelets. The reaction is dependent on the number of bound C3 molecules on the C3b receptor sites of the indicator cell.
Red blood cells. Mature erythrocytes are non-nucleated, biconcave disks containing HEMOGLOBIN whose function is to transport OXYGEN.
Molecules found on the surface of some, but not all, B-lymphocytes, T-lymphocytes, and macrophages, which recognize and combine with the Fc (crystallizable) portion of immunoglobulin molecules.
Molecules on the surface of some B-lymphocytes and macrophages, that recognize and combine with the C3b, C3d, C1q, and C4b components of complement.
Crystallizable fragments composed of the carboxy-terminal halves of both IMMUNOGLOBULIN HEAVY CHAINS linked to each other by disulfide bonds. Fc fragments contain the carboxy-terminal parts of the heavy chain constant regions that are responsible for the effector functions of an immunoglobulin (COMPLEMENT fixation, binding to the cell membrane via FC RECEPTORS, and placental transport). This fragment can be obtained by digestion of immunoglobulins with the proteolytic enzyme PAPAIN.
White blood cells formed in the body's lymphoid tissue. The nucleus is round or ovoid with coarse, irregularly clumped chromatin while the cytoplasm is typically pale blue with azurophilic (if any) granules. Most lymphocytes can be classified as either T or B (with subpopulations of each), or NATURAL KILLER CELLS.
IMMUNOGLOBULINS on the surface of B-LYMPHOCYTES. Their MESSENGER RNA contains an EXON with a membrane spanning sequence, producing immunoglobulins in the form of type I transmembrane proteins as opposed to secreted immunoglobulins (ANTIBODIES) which do not contain the membrane spanning segment.
Leukemia associated with HYPERPLASIA of the lymphoid tissues and increased numbers of circulating malignant LYMPHOCYTES and lymphoblasts.
Lymphocytes responsible for cell-mediated immunity. Two types have been identified - cytotoxic (T-LYMPHOCYTES, CYTOTOXIC) and helper T-lymphocytes (T-LYMPHOCYTES, HELPER-INDUCER). They are formed when lymphocytes circulate through the THYMUS GLAND and differentiate to thymocytes. When exposed to an antigen, they divide rapidly and produce large numbers of new T cells sensitized to that antigen.
A glycoprotein that is central in both the classical and the alternative pathway of COMPLEMENT ACTIVATION. C3 can be cleaved into COMPLEMENT C3A and COMPLEMENT C3B, spontaneously at low level or by C3 CONVERTASE at high level. The smaller fragment C3a is an ANAPHYLATOXIN and mediator of local inflammatory process. The larger fragment C3b binds with C3 convertase to form C5 convertase.
Techniques used to demonstrate or measure an immune response, and to identify or measure antigens using antibodies.
Molecular sites on or in some B-lymphocytes and macrophages that recognize and combine with COMPLEMENT C3B. The primary structure of these receptors reveal that they contain transmembrane and cytoplasmic domains, with their extracellular portion composed entirely of thirty short consensus repeats each having 60 to 70 amino acids.
Local surface sites on antibodies which react with antigen determinant sites on antigens (EPITOPES.) They are formed from parts of the variable regions of FAB FRAGMENTS.
Serum containing GAMMA-GLOBULINS which are antibodies for lymphocyte ANTIGENS. It is used both as a test for HISTOCOMPATIBILITY and therapeutically in TRANSPLANTATION.
Any of the ruminant mammals with curved horns in the genus Ovis, family Bovidae. They possess lachrymal grooves and interdigital glands, which are absent in GOATS.
Lymphoid cells concerned with humoral immunity. They are short-lived cells resembling bursa-derived lymphocytes of birds in their production of immunoglobulin upon appropriate stimulation.
The major immunoglobulin isotype class in normal human serum. There are several isotype subclasses of IgG, for example, IgG1, IgG2A, and IgG2B.
Serum glycoproteins participating in the host defense mechanism of COMPLEMENT ACTIVATION that creates the COMPLEMENT MEMBRANE ATTACK COMPLEX. Included are glycoproteins in the various pathways of complement activation (CLASSICAL COMPLEMENT PATHWAY; ALTERNATIVE COMPLEMENT PATHWAY; and LECTIN COMPLEMENT PATHWAY).
A skin irritant that may cause dermatitis of both primary and allergic types. Contact sensitization with DNCB has been used as a measure of cellular immunity. DNCB is also used as a reagent for the detection and determination of pyridine compounds.
A cytotoxic member of the CYTOCHALASINS.
A class of immunoglobulin bearing mu chains (IMMUNOGLOBULIN MU-CHAINS). IgM can fix COMPLEMENT. The name comes from its high molecular weight and originally being called a macroglobulin.
Sets of cell surface antigens located on BLOOD CELLS. They are usually membrane GLYCOPROTEINS or GLYCOLIPIDS that are antigenically distinguished by their carbohydrate moieties.
The larger fragment generated from the cleavage of COMPLEMENT C3 by C3 CONVERTASE. It is a constituent of the ALTERNATIVE PATHWAY C3 CONVERTASE (C3bBb), and COMPLEMENT C5 CONVERTASES in both the classical (C4b2a3b) and the alternative (C3bBb3b) pathway. C3b participates in IMMUNE ADHERENCE REACTION and enhances PHAGOCYTOSIS. It can be inactivated (iC3b) or cleaved by various proteases to yield fragments such as COMPLEMENT C3C; COMPLEMENT C3D; C3e; C3f; and C3g.
The number of WHITE BLOOD CELLS per unit volume in venous BLOOD. A differential leukocyte count measures the relative numbers of the different types of white cells.
A species of protozoa that is the causal agent of falciparum malaria (MALARIA, FALCIPARUM). It is most prevalent in the tropics and subtropics.
The complex formed by the binding of antigen and antibody molecules. The deposition of large antigen-antibody complexes leading to tissue damage causes IMMUNE COMPLEX DISEASES.
Antibodies produced by a single clone of cells.
Large, phagocytic mononuclear leukocytes produced in the vertebrate BONE MARROW and released into the BLOOD; contain a large, oval or somewhat indented nucleus surrounded by voluminous cytoplasm and numerous organelles.
The processes triggered by interactions of ANTIBODIES with their ANTIGENS.
Serum that contains antibodies. It is obtained from an animal that has been immunized either by ANTIGEN injection or infection with microorganisms containing the antigen.
The engulfing and degradation of microorganisms; other cells that are dead, dying, or pathogenic; and foreign particles by phagocytic cells (PHAGOCYTES).
Malaria caused by PLASMODIUM FALCIPARUM. This is the severest form of malaria and is associated with the highest levels of parasites in the blood. This disease is characterized by irregularly recurring febrile paroxysms that in extreme cases occur with acute cerebral, renal, or gastrointestinal manifestations.
Adherence of cells to surfaces or to other cells.
An encapsulated lymphatic organ through which venous blood filters.
A serine endopeptidase that is formed from TRYPSINOGEN in the pancreas. It is converted into its active form by ENTEROPEPTIDASE in the small intestine. It catalyzes hydrolysis of the carboxyl group of either arginine or lysine. EC 3.4.21.4.
Proteins that share the common characteristic of binding to carbohydrates. Some ANTIBODIES and carbohydrate-metabolizing proteins (ENZYMES) also bind to carbohydrates, however they are not considered lectins. PLANT LECTINS are carbohydrate-binding proteins that have been primarily identified by their hemagglutinating activity (HEMAGGLUTININS). However, a variety of lectins occur in animal species where they serve diverse array of functions through specific carbohydrate recognition.
Antigens on surfaces of cells, including infectious or foreign cells or viruses. They are usually protein-containing groups on cell membranes or walls and may be isolated.
A common name used for the genus Cavia. The most common species is Cavia porcellus which is the domesticated guinea pig used for pets and biomedical research.
Morphologic alteration of small B LYMPHOCYTES or T LYMPHOCYTES in culture into large blast-like cells able to synthesize DNA and RNA and to divide mitotically. It is induced by INTERLEUKINS; MITOGENS such as PHYTOHEMAGGLUTININS, and by specific ANTIGENS. It may also occur in vivo as in GRAFT REJECTION.
Sites on an antigen that interact with specific antibodies.
Test for tissue antigen using either a direct method, by conjugation of antibody with fluorescent dye (FLUORESCENT ANTIBODY TECHNIQUE, DIRECT) or an indirect method, by formation of antigen-antibody complex which is then labeled with fluorescein-conjugated anti-immunoglobulin antibody (FLUORESCENT ANTIBODY TECHNIQUE, INDIRECT). The tissue is then examined by fluorescence microscopy.
A single, unpaired primary lymphoid organ situated in the MEDIASTINUM, extending superiorly into the neck to the lower edge of the THYROID GLAND and inferiorly to the fourth costal cartilage. It is necessary for normal development of immunologic function early in life. By puberty, it begins to involute and much of the tissue is replaced by fat.
Specific molecular sites on the surface of various cells, including B-lymphocytes and macrophages, that combine with IMMUNOGLOBULIN Gs. Three subclasses exist: Fc gamma RI (the CD64 antigen, a low affinity receptor), Fc gamma RII (the CD32 antigen, a high affinity receptor), and Fc gamma RIII (the CD16 antigen, a low affinity receptor).
The demonstration of the cytotoxic effect on a target cell of a lymphocyte, a mediator released by a sensitized lymphocyte, an antibody, or complement.
Cell surface molecules on cells of the immune system that specifically bind surface molecules or messenger molecules and trigger changes in the behavior of cells. Although these receptors were first identified in the immune system, many have important functions elsewhere.
A general term for various neoplastic diseases of the lymphoid tissue.
Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.
The interaction of two or more substrates or ligands with the same binding site. The displacement of one by the other is used in quantitative and selective affinity measurements.
The relatively long-lived phagocytic cell of mammalian tissues that are derived from blood MONOCYTES. Main types are PERITONEAL MACROPHAGES; ALVEOLAR MACROPHAGES; HISTIOCYTES; KUPFFER CELLS of the liver; and OSTEOCLASTS. They may further differentiate within chronic inflammatory lesions to EPITHELIOID CELLS or may fuse to form FOREIGN BODY GIANT CELLS or LANGHANS GIANT CELLS. (from The Dictionary of Cell Biology, Lackie and Dow, 3rd ed.)
Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.
The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells.
Established cell cultures that have the potential to propagate indefinitely.
Granular leukocytes having a nucleus with three to five lobes connected by slender threads of chromatin, and cytoplasm containing fine inconspicuous granules and stainable by neutral dyes.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.

Establishment of an activated macrophage cell line, A-THP-1, and its properties. (1/1162)

A new macrophage cell line with activated character and unique morphology was isolated by selecting adherent cells from the human monocytic cell line THP-1. The original THP-1 cells had been cultured for more than 9 years using 25 cm2 flasks, when cells with a different morphology appeared, adhering to the bottoms of the culture flasks. These were selected by discarding floating nonadherent cells at every subculture. Enrichment of adherent THP-1 cells with long processes proceeded during the cultivation. These adherent THP-1 showed remarkable phenotypic changes, not only morphologically, but also functionally. Namely, increased phagocytic activity, HLA-DR expression and MLR stimulator activity were remarkable. This adherent cell line was designated as activated-THP-1 (A-THP-1), since it demonstrated characteristics of activated macrophages continuously without exogenous stimulation. A cloned A-THP-1 cell line (A-THP-1 C1) also showed the same features and contained about 10% multinucleated giant cells probably caused by cell fusion. This A-THP-1 cell line, the first activated macrophage cell line to be established, provides a good model for understanding of activation mechanisms of macrophages and multinucleation. In this paper, morphological, immunological, and biological characters of this cell line are described.  (+info)

Protein kinase C and a calcium-independent phospholipase are required for IgG-mediated phagocytosis by Mono-Mac-6 cells. (2/1162)

Mono-Mac-6 (MM6) human monocytes ingest IgG-opsonized particles better than other human cell lines. We compared the phagocytic signaling pathway in MM6 with human monocytes. MM6 expressed FcgammaRI at levels similar to monocytes, whereas FcRgammaII expression was approximately double. MM6 ingested IgG-opsonized erythrocytes (EIgG) in a calcium-independent manner. Incubation of MM6 with bromoenol lactone, an inhibitor of the phagocytic phospholipase (pPL), coordinately decreased phagocytosis and pPL activity. This inhibition was overcome by exogenous arachidonic acid, suggesting that phagocytosis requires pPL activation and arachidonic acid release. MM6 phagocytosis was inhibited with staurosporine and activated with diacylglycerol, supporting a role for protein kinase C (PKC) in this process. The pPL activators mastoparan and melittin restored phagocytosis to PKC-inhibited cells, suggesting that pPL lies downstream from PKC. These results suggest that the MM6 signal transduction pathway for IgG-mediated phagocytosis is similar to that of monocytes (PKC-->pPL-->arachidonic acid-->phagocytosis). The results are discussed in the context of the finding that MM6 exhibit low phagocytosis relative to monocytes and thus may represent an attractive cell line for molecular manipulation in "recovery of function" studies.  (+info)

Identification of residues in the CH2/CH3 domain interface of IgA essential for interaction with the human fcalpha receptor (FcalphaR) CD89. (3/1162)

Cellular receptors for IgA (FcalphaR) mediate important protective functions. An extensive panel of site-directed mutant IgAs was used to identify IgA residues critical for FcalphaR (CD89) binding and triggering. Although a tailpiece-deleted IgA1 was able to bind and trigger CD89, antibodies featuring CH3 domain exchanges between human IgA1 and IgG1 could not, indicating that both domains but not the tailpiece are required for FcalphaR recognition. To further investigate the role of the interdomain region, numerous IgA1s, each with a point substitution in either of two interdomain loops (Leu-257-Gly-259 in Calpha2; Pro-440-Phe-443 in Calpha3), were generated. With only one exception (G259R), substitutions produced either ablation (L257R, P440A, A442R, F443R) or marked reduction (P440R) in CD89 binding and triggering. Further support for involvement of these interdomain loops was provided by interspecies comparisons of IgA. Thus a human IgA1 mutant, LA441-442MN, which mimicked the mouse IgA loop sequence through substitution of two adjacent residues in the Calpha3 loop, was found, like mouse IgA, not to bind CD89. In contrast, bovine IgA1, identical to human IgA1 within these interdomain loops despite numerous differences elsewhere in the Fc region, did bind CD89. We have thus identified motifs in the interdomain region of IgA Fc critical for FcalphaR binding and triggering, significantly enhancing present understanding of the molecular basis of the IgA-FcalphaR interaction.  (+info)

Plasmodium falciparum malaria: rosettes are disrupted by quinine, artemisinin, mefloquine, primaquine, pyrimethamine, chloroquine and proguanil. (4/1162)

An assay was developed measuring the disruption of rosettes between Plasmodium falciparuminfected (trophozoites) and uninfected erythrocytes by the antimalarial drugs quinine, artemisinin mefloquine, primaquine, pyrimethamine, chloroquine and proguanil. At 4 hr incubation rosettes were disrupted by all the drugs in a dose dependent manner. Artemisinin and quinine were the most effective anti-malarials at disrupting rosettes at their therapeutic concentrations with South African RSA 14, 15, 17 and The Gambian FCR-3 P. falciparum strains. The least effective drugs were proguanil and chloroquine. A combination of artemisinin and mefloquine was more effective than each drug alone. The combinations of pyrimethamine or primaquine, with quinine disrupted more rosettes than quinine alone. Quinine may be an effective drug in the treatment of severe malaria because the drug efficiently reduces the number of rosettes.  (+info)

Cytoadherence characteristics of Plasmodium falciparum-infected erythrocytes from Malawian children with severe and uncomplicated malaria. (5/1162)

Cytoadherence of Plasmodium falciparum-infected erythrocytes to the microvascular endothelium is believed to be a key factor in the development of cerebral malaria. Erythrocyte rosette formation has been correlated with malaria severity in studies from east and west Africa. We cultured fresh isolates from Malawian children with severe (n = 76) or uncomplicated (n = 79) malaria to pigmented trophozoite stage and examined rosette formation and adherence to CD36, intercellular adhesion molecule-1 (ICAM-1), chondroitin sulfate A (CSA), and thrombomodulin (TM). Most (126 of 148) isolates bound to CD36, and 76 of 136 bound to ICAM-1. Fewer bound to CSA (40 of 148) or TM (23 of 148). After controlling for parasitemia, there was an inverse association between binding to CD36 (P = 0.004) or ICAM-1 (P = 0.001) and disease severity. Parasites from children with severe malaria anemia bound least to CD36, whereas ICAM-1 binding was lowest in children with cerebral malaria. There was no difference in rosette formation between any of the groups. In Malawian children, there was no evidence of a positive association between adherence to any of the receptors examined and disease severity. The negative association found raises the possibility that adherence to certain receptors could instead be an indicator of a less pathogenic infection.  (+info)

In vivo role of complement-interacting domains of herpes simplex virus type 1 glycoprotein gC. (6/1162)

Immune evasion is critical for survival of viruses that establish persistent or recurrent infections. However, at the molecular level, little is known about how viruses evade immune attack in vivo. Herpes simplex virus (HSV)-1 glycoprotein gC has two domains that are involved in modulating complement activation; one binds C3, and the other is required for blocking C5 and properdin (P) binding to C3. To evaluate the importance of these regions in vivo, HSV-1 gC mutant viruses were constructed that lacked one or both gC domains and studied in a murine model of infection. Each gC region of complement regulation contributed to virulence; however, the C3 binding domain was far more important, as virus lacking this domain was much less virulent than virus lacking the C5/P inhibitory domain and was as attenuated as virus lacking both domains. Studies in C3 knockout mice and mice reconstituted with C3 confirmed that the gC domains are inhibitors of complement activation, accounting for a 50-fold difference in virulence between mutant and wild-type viruses. We conclude that the C3 binding domain on gC is a major contributor to immune evasion and that this site explains at a molecular level why wild-type virus resists complement attack.  (+info)

Plasmodium falciparum rosette formation is uncommon in isolates from pregnant women. (7/1162)

We examined the formation of Plasmodium falciparum erythrocyte rosettes using parasite isolates from placental or peripheral blood of pregnant Malawian women and from peripheral blood of children. Five of 23 placental isolates, 23 of 38 maternal peripheral isolates, and 136 of 139 child peripheral isolates formed rosettes. Placental isolates formed fewer rosettes than maternal isolates (range, 0 to 7. 5% versus 0 to 33.5%; P = 0.002), and both formed fewer rosettes than isolates cultured from children (range, 0 to 56%; P < 0.0001). Rosette formation is common in infections of children but uncommon in pregnancy and rarely detected in placental isolates.  (+info)

Autologous T cells control B-chronic lymphocytic leukemia tumor progression in human-->mouse radiation chimera. (8/1162)

B-chronic lymphocytic leukemia (B-CLL) is characterized by the clonal accumulation of CD5+ B cells. It has been suggested that CLL cells may be regulated by inhibitory and growth-promoting signals exerted by autologous T cells. We have recently described a model for human B-CLL in which peripheral blood mononuclear cells (PBMCs) are transplanted into the peritoneal cavity of lethally irradiated mice radioprotected with bone marrow from mice with severe combined immunodeficiency. In this model, adoptive transfer of low-stage PBMCs leads to marked engraftment of T cells or combined T and CLL cell engraftment, whereas infusion of high-stage PBMCs leads to dominance of CLL cells with a miniscule level of T-cell engraftment. This mutual exclusive pattern of engraftment indicated that T cells might control the expansion of tumor cells in the peritoneum of recipient BALB/c mice. In the present study, we further investigated this question and we demonstrate that in vivo T-cell depletion, using OKT3 antibody, markedly enhances the engraftment of B-CLL cells from patients with early-stage disease. In mice receiving PBMCs from 11 donors with advanced-stage disease, the results were more heterogeneous. In five patients the results were similar to those observed in early stage, whereas in two cases no CLL cell engraftment was found in the absence of T cells. The addition of purified T cells to PBMCs led to a substantial decrease of CLL engraftment in three advanced-stage cases. These results strengthen the working hypothesis that autologous T cells can actively suppress the expansion of the pathological cells in human-->mouse radiation chimera. This effect is prominent in early-stage disease, whereas in advanced stage suppressive and/or stimulatory effects may occur in different patients. The interaction of T cells with tumor cells and the potential of autologous T cell/immune-therapy in CLL can be further explored in this model.  (+info)

Plasmodium falciparum Rosetting Epitopes Converge in the SD3-Loop of PfEMP1-DBL1α. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
The ability of Plasmodium falciparum-infected erythrocytes to form spontaneous rosettes with uninfected red cells is a parasite adhesion property which has been associated with severe malaria. The mechanism of rosetting remains unknown, but the ability of heparin to disrupt rosettes has been recognised previously. In this paper we show that a group of sulphated glycoconjugates including sulphatide, dextran sulphate, and fucoidan are more effective rosette reversing agents than heparin and are active against both laboratory strains and wild isolates. Other related anionic glycosaminoglycans such as the chondroitin sulphates A, B, and C and hyaluronic acid have no effect on rosette formation. This family of sulphated glycoconjugates which are active against rosettes is also known to inhibit sporozoite invasion of hepatocytes and merozoite reinvasion of erythrocytes, suggesting that sulphated glycoconjugate interaction may be an important process in cell adhesion at different stages in the plasmodial life
Arnaiz, villena A.; Gyongyossy, M I.; and Playfair, J H., Rosette formation by mouse lymphocytes. II. T-cell specificities in a crl subpopulation. (1974). Subject Strain Bibliography 1974. 572 ...
Alveolar macrophage-lymphocyte rosette formation: failure of levamisole to alter activity.: Levamisole, an anthelminthic agent with immunostimulatory properties
A unique feature of Hodgkin lymphoma (HL) is the presence of CD4+ T cells that surround, protect and promote survival of tumor cells. The adhesion molecules involved in this so-called T cell rosetting are important components of the immunological synapse (IS). However, it is unknown whether this synapse is fully assembled and leads to T cell activation by enabling interaction between the T cell receptor (TCR) and human leukocyte antigen class II (HLA-II). We established a novel rosetting model by co-culturing HLA-II matched PBMCs with HL cell lines and show IS formation with activation of rosetting T cells. HLA-II downregulation by CIITA-knockout did not affect the extent of rosetting, but almost completely abrogated T cell activation. Intriguingly, the level of CD58 expression correlated with the extent of rosette formation and CD58-knockout or CD2 blockade reduced both rosette formation and T cell activation. Extension of our findings to primary HL tissue by immunohistochemistry and proximity ...
The rosettes that form during compound eye development evolve from nine- to ten-cell-wide lines of cells (Fig. 4) (Brown et al., 2006; Escudero et al., 2007; Robertson et al., 2012). These lines evolve into arcs, which are composed of six to seven cells surrounding the core cells that are eventually excluded from the rosette. Each arc then zips up into a rosette conformation, which initially contains up to seven cells joined at a central vertex (Fig. 4). During this period, markers of neuronal maturation are detectable in presumptive photoreceptors (Brown et al., 2006). Over time, core cells are excluded, progressively giving rise to a six-cell intermediate and then a five-cell rosette (Robertson et al., 2012).. In the absence of three-dimensional reconstruction studies, it is difficult to determine whether rosette formation in the Drosophila eye is based on apical or planar polarized constriction, although the localization of Par-3 and myosin-II to reciprocal domains prior to rosette ...
Berrih, S; London, J; Bonavida, B; and Bach, J F., Detection and characterization of lymphocytes bearing receptors for peanut agglutinin by a specific rosetting technique. (1981). Subject Strain Bibliography 1981. 1339 ...
So that, by color-symmetry desymmetrizations of the symmetry groups of rosettes, it is possible to obtain exclusively symmetry groups of the type Cn (n). Group-subgroup relations can also serve as an indicator of the frequency of occurrence of certain rosettes in ornamental art, in line with the tendency toward maximal visual simplicity and symmetry. The full expression of the principle of visual entropy is the very frequent use of circles - visual models of the maximal continuous symmetry group of rosettes D ( m). The same is a reason for the domination of the dihedral symmetry groups of rosettes Dn (nm) over the corresponding cyclic groups Cn (n), resulting from the relationship [Dn:Cn] = 2. The priority of rosettes with the symmetry group D2n (2nm) over rosettes with the symmetry group Dn (nm), or rosettes with the symmetry group C2n (2n) over rosettes with the symmetry group Cn (n) ( [D2n:Dn] = 2, [ C2n:Cn] = 2 ), may be reduced to the question of the existence of a central reflection as the ...
Steel Supply, L.P. is the leading online supplier for Ornamental Iron including Rosettes Rosettes & Inserts such as 681-DF. All Rosettes Rosettes & Inserts ordered by noon will ship today.
Mc Clendon, J. F., Colloidal Properties of the surface of the living cell. Colloid Symposium monograph. Chem. Cat. Co. 4: 224 (1926).Google Scholar ...
The modern simplicity of the Keep One-Piece Handleset creates a strong, welcoming effect on any exterior front door. On the interior side of the door, pair with with any Ageless Iron rosette, short plate or long plate combination. The powder coated matte black finish provides superior resistance to the elements, making
There is no cure for RRD that you can use to treat a rose once its infected. However, if you act quickly you might, just might, be able to save the rose. To understand why this might work its important to understand what happens once RRD infects the plant.
General Oceanics - 1015 - 12 Pos F/8 Liter Rosette Water Samplers by General Oceanics Inc.. Models 1015-12 and 1015-24 Rosette® multibottle arrays - ...
Abstract Animal models are needed for the study of cytoadherence in falciparum malaria. Red blood cell (RBC) rosette formation is one type of cytoadherence and appears to be associated with knob formation, endothelial cell adhesion and sequestration of Plasmodium-infected RBCs. Since Plasmodium coatneyi-infected RBCs develop knobs and sequester, we hypothesized that they also form rosettes. RBCs from P. coatneyi-infected rhesus monkeys (Macaca-mulatta) were collected, allowed to mature overnight in vitro and found to form rosettes as hypothesized. This observation adds to the known falciparum-like characteristics of P. coatneyi, and suggests that the Macaca mulatta-P. coatneyi model may be appropriate for pathophysiologic studies of cytoadherence.
We describe morphologic characteristics of acridine orange-stained Plasmodium falciparum-infected erythrocytes and the sequential expression of several adhesion phenomena. In particular, we have studied when the adhesive and antigenic modifications appear on the infected erythrocyte surface that mediate binding to C32 melanoma cells (cytoadherence) or to erythrocytes (rosette formation) during a complete 48-hr life cycle of the parasite. The C32 melanoma cell binding started at about 12 hr and was seen during the whole life cycle with a peak around 28 hr (650 infected erythrocytes/100 C32 melanoma cells). Rosettes started to appear and immunoglobulin was found bound to the parasitized red blood cell (PRBC) somewhat later (16-20 hr). These adhesive events culminated at the mid-trophozoite/schizont stage (24-36 hr) with rosette formation and an immunoglobulin binding rate of about 50%, which decreased to about half of the peak values at the end of the life cycle. Serum-induced agglutination of the
Rosette formation is one of the unique biological phenomena that have been linked to pathobiology of malaria. It is believe to be associated with the severe outcomes of falciparum malaria. Most of the knowledge about rosetting is obtained from in-depth studies conducted on Plasmodium falciparum. However, the rosetting phenomenon and pathobiology of vivax malaria is not well studied. This research project aimed at deciphering the unknown aspects behind rosetting phenomenon of P. vivax, and investigating the role of rosette formation in pathobiology of vivax malaria. In total, 121 fresh P. vivax isolates, 48 cryopreserved P. vivax isolates, 122 fresh P. falciparum isolates and 5 cryopreserved P. falciparum isolates were recruited into this research project. A novel technique suitable for reticulocyte characterization and rosetting assay in field setting was developed from this research project. Based on the field studies conducted, rosette formation is common in P. vivax. However, rosetting is not ...
We use cookies to ensure that we give you the best experience on our website. If you click Continue well assume that you are happy to receive all cookies and you wont see this message again. Click Find out more for information on how to change your cookie settings ...
p,Immunoblotting (A) and rosette inhibition (B) by pairs of antibodies that were either non-absorbed, or absorbed on NTS-DBL1α recombinant protein coupled to sepharose. A) Recombinant NTS-DBL1α protein was spotted onto nitrocellulose membrane at doubling dilutions, starting from 2 µg/ml, and incubated with 1/1000 dilution of absorbed or non-absorbed antibody. 1) non-absorbed anti-NTS-DBL1α, 2) absorbed anti-NTS-DBL1α, 3) non-absorbed anti-NTS-DBL1α-CIDR1γ, 4) absorbed anti-NTS-DBL1α-CIDR1γ, 5) non-absorbed anti-DBL3ε, 6) absorbed anti-DBL3ε, 7) non-absorbed anti-DBL4δ and 8) absorbed anti-DBL4δ. Non-absorbed antibodies to DBLα (lanes 1 and 3) and DBL4δ (lane7) recognized NTS-DBL1α recombinant protein. After absorption, however, this activity was lost (lanes 2, 4 and 8). Antibodies to DBL3ε did not recognize NTS-DBL1α recombinant protein (lanes 4 and 5). B) Rosette inhibition assays showed that the anti-rosetting activity of NTS-DBL1α antibodies was lost after absorption. ...
Mouse bone marrow contains spontaneous rosette-forming cells (RFC) which include more than 70% T-cell precursors, as assessed by their transformation into theta-positive cells after incubation with thymic hormone. Such spontaneous RFC, examined in C5
A new monoclonal rat anti-human lymphocyte antibody (CAMPATH-1) which lyses cells with autologous human complement was used for depletion of T lymphocytes from human bone-marrow allografts in vitro before transplantation in 11 high-risk patients. HLA-matched siblings were used as marrow donors. T-cell depletion was substantial when measured by E-rosette formation (0-0.18% residual T cells) and immunofluorescence with a monoclonal anti-T-cell antibody (0-0.5%). No anti-graft-versus-host disease prophylaxis was given after transplantation. Rapid engraftment was reported in all patients, and the post-transplantation course was uneventful. No signs of graft-versus-host disease developed in any of the patients, who were observed for a maximum period of 12 months. The method might be suitable for larger-scale studies in high-risk patients. The late graft failure seen in 2 patients may reflect residual host resistance uncompromised by GvHD.
Increased numbers of eosinophilic granulocytes that exhibit an activated phenotype are found in bronchial tissue and bronchial alveolar lavage fluid of patients with allergic asthma. Little is known about the processes that lead to activation of eosinophils in vivo, but Igs might be important stimulants. In the present study we investigated the capacity of human eosinophils to interact with beads coated with human serum IgG or IgA. Binding of IgG/IgA-coated beads to eosinophils from normal donors appeared to be dependent on priming with Th2-derived cytokines. Priming with granulocyte-macrophage CSF, IL-4, or IL-5 is required for eosinophils to form rosettes with IgA-beads. IL-4 priming resulted in a fast and transient effect on binding of IgA-beads, whereas the effect of IL-5 priming was slower and longer lasting. The expression of Fc alphaR (CD89) was low compared with that on neutrophils, and experiments with the blocking mAb My43 (CD89) showed no inhibition of rosette formation between ...
We studied the ability of lymphocytes from type I (insulin-dependent) diabetic patients to adhere to murine β-cells. Lymphocytes from 17 recent-onset type I diabetic subjects (,6 mo) displayed enhanced ability to form rosettes with RINm5F cells (P , .001) compared with lymphocytes from 27 healthy subjects forming background rosettes, whereas the number of RIN cytoadherent lymphocytes was unimpaired in 12 type II (non-insulin-dependent) diabetic subjects. This phenomenon tended to decline in 21 subjects with long-standing diabetes (,1 yr) who taken as a group presented a normal number of RIN rosetting lymphocytes. The islet specificity of these diabetic rosettes was confirmed because, compared with controls, lymphocytes from recent-onset type I diabetic subjects also displayed a greater intensity of adherence to normal mouse islets but not to unrelated K562 and TS cell lines. As demonstrated by indirect immunofluorescence studies, these diabetic rosettes contained 54% of T-lymphocytes (OKT3+, ...
First of all I would like to start with the appearance of the product. The jar looks awesome! White colored tub packaging looks very minimalist and futuristic. With the product you also get a little plastic spatula which helps you keep your product uncontaminated for a little longer.. Texture of a moisturizer is white and gel-ish. It has a typical non-scented chemical smell which I like. I apply the gel after I washed, toned and nourished my skin with serums and essences. When I patted it into my skin it absorbed really quickly (5-8 min).. The other day I put it on way more and it needed longer time to absorb, and that day I skipped serums and essences, because it claims that it can provide five basic skincare elements: Lotion, Beauty Serum, Emulsion, Cream, and Mask.. ...
Thallus: placodioid, 4-6 cm or more in diam., 0.5-2(-3) mm thick in center, distinctly rosetted, but often confluent, tightly to usually +loosely adherent; rimose-areolate to verrucose-areolate or bullate-areolate in center; prothallus: vestigial, the lobe tips and occasionally edges frequently dark olivaceous to bluish black areoles: contiguous, irregular in outline, 0.3-1.5 mm across, convex to irregularly depressed lobes: 4-8 mm long, 0.5-1.5 mm wide, to c. 1 mm thick, +contiguous, usually +distinct to the thallus center, plane to +strongly but irregularly convex and swollen, sinuous, weakly to strongly plicate, furrowed along the center, or irregularly foveolate, crenate-incised towards tips, the ultimate segments 0.3-0.7 mm wide; tips dilated, often recurved upper surface: +dull, spottily to densely pruinose; continuous to rather strongly rimose; pale, moderate, or grayish greenish yellow, pale or grayish yellowish green, light to moderate or grayish yellow, in herbarium pale yellow, pale ...
Surface Treatment:No; Seal:Nitrile; Unit, Type:Insert Bearing Unit; Bearing Inner Dia. Shape:Cylindrical Bore Set; Basic Load Rating, Static Rating(N):40100; RoHS:6; Basic Load Rating, Dynamic Rating(N):57200; Rolling Element Material:Bearing Steel; d:65; Bearing Inner Dia. Shape:Cylindrical Bore Set ...
Follow this easy tutorial and learn how to make tissue flowers. Then use those flowers to make some fun kissing balls. Great idea for wedding and home decor.
Our reports show Osmolarity was restored and a culture containing 30% lysed uninfected erythrocytes and 70% intact uninfected erythrocytes clearly that directional flight action and time compensated sunshine compass orientation persist reproductively active Osmolarity was restored and a culture containing 30% lysed uninfected erythrocytes and 70% intact uninfected erythrocytes migrants, but persistent time compensation experienced not been revealed earlier. It is Osmolarity was restored and a culture containing 30% lysed uninfected erythrocytes and 70% intact uninfected erythrocytes nonetheless feasible that JH deficiency is involved in the induction of directed flight for sun compass orientation, but it is distinct from our results that persistent JH deficiency is not required for upkeep. More analysis of the forty genes we have discovered in monarchs will very likely offer novel insights into their personal and or collective significance for migration and the brain alterations needed to ...
Rosetting, i.e. the capacity of red blood cells (iRBCs) infected with mature parasite stages to bind two or more uninfected red blood cells (RBCs) is a virulence factor of Plasmodium falciparum. This protocol describes an in vitro assay to monitor rosette formation by P. falciparum-infected red blood cells, including procedures for rosette enrichment, maintenance of rosetting phenotype and assays for rosetting with RBC labeled using lipophilic fluorescent probes.
TY - JOUR. T1 - Regulation of IgG antibody-dependent cellular cytotoxicity in vitro by IgM antibodies. Mechanism and characterization of effector lymphocytes. AU - Perlmann, H.. AU - Perlmann, P.. AU - Moretta, L.. AU - Ronnholm, M.. PY - 1981. Y1 - 1981. N2 - IgM antibodies have previously been reported to either inhibit or induce antibody-dependent lymphocyte cytotoxicity (ADCC). Here the authors show that human lymphocytes lyse bovine erythrocytes (Eb) in the presence of either IgM or IgG anti-Eb from rabbits. Seven out of 20 IgM preparations (Sephadex G-200) were ADCC-active. IgG-dependent ADCC was inhibited by human IgG but not by IgM. In contrast, IgM ADCC was inhibited by both IgG and IgM. The effector cells in IgM ADCC were a subpopulation of lymphocytes with distinct Fc receptors for both IgG and IgM. Most of them also had sheep erythrocyte receptors. Extensive purification of the ADCC-active IgM antibody preparations indicated that very small amounts of contaminating IgG anti-Eb were ...
Abstract. Monoclonal antibody OKT11 was found to compete with sheep red blood cells for binding sites on human lymphocytes. Preincubation of lymphocytes with OK
Antibody-bearing cells of spleen and lymph node of the mouse and rabbit detected by rosette formation with the antigenic red blood cells were collected by micropipet and studied by electron microscopy. More than 300 such cells were examined. In the lymph nodes, rosette-forming cells were all in the lymphocytic and plasmacytic categories. In cells of the mouse spleen, macrophages were also found among the RFC, especially in the later days after immunization.. The great majority of the RFC, 70-100%, were of the lymphocytic category. These included small, medium, and large lymphocytes with fine gradations of differentiation, and blast forms with little heterochromatin. The endoplasmic reticulum of these cells occurred in short, very narrow pieces, usually in contact with a mitochondrion. The cells of the plasmacytic category also showed fine gradations from plasmablasts to typical mature plasma cells.. Plaque-forming cells of mouse and rabbit were also collected by micropipet. Of 162 such cells, ...
Rosetting refers to the adherence of uninfected erythrocytes to erythrocytes containing mature forms of some, but not all, isolates of P. falciparum. The phenomenon is observed when suspensions of parasitised cells are viewed under the microscope, and for some isolates depends on the blood group of the cells used for culture (Figure 3.5). The relevance of the in vitro findings is debated, as in some (Carlson et al., 1990), but ...
Shannon Fabrics - Wholesale Fabrics Faux Furs, Snuggly Cuddle, Ultra Plush Minky and Super Soft Silky Satin Rosette Embrace® Eggplant [emrosetteeggplant] - Rose prints never go out of style - theyre timeless, classy and pair well with just about everything. Our Rosette Embrace® double gauze fabric is available in our Eggplant color option, and is highlighted by gorgeous rose blossoms in purple hues set on deep green leafy stems. This floral double
China Brass Rosette Lock Door Handle-Ba571, Find details about China Brass Door Handle, Handle and Plate from Brass Rosette Lock Door Handle-Ba571 - Wenzhou Tops Hardware Co., Ltd.
The Ia antigens, usually expressed primarily on B lymphocytes, are found on a small percentage of normal peripheral blood T cells (average 2.6% by fluorescence and 10.8% by rosette assay). Elevated levels up to 40% by both assays were observed in a high proportion of patients with rheumatoid arthritis. Increases also were found in patients with systemic lupus erythematosus and various types of infections. The increases were evident with a specific heteroantiserum, a hybridoma reagent, and DR specific alloantisera. Normal levels were present in multiple sclerosis and an assortment of metabolic and other disorders. A rise in similarly positive T cells occurred in normal individuals after immunization with tetanus toxoid or PPD. The cells primarily involved in all of these instances were small lymphocytes, which stained relatively weakly with the fluorescent reagents and were readily distinguishable from T-cell blasts. They were found to be enriched in isolated T gamma fractions but were also found ...
Rosetting FCR3S1.2-PfEMP1 binds to heparan sulfate. All the gels are 10% SDS-PAGE stained with Coomassie. A shows the expressed GST, DBL-1-GST, or ATS-GST
Rosette Fleuriste in Lasalle, QC, offers FREE SAME-DAY hand delivery for fresh, elegant & affordable arrangements& gift baskets!
Lipid profiles in the rosettes of WT, ACBP3-OEs and ACBP3-KOs after LS treatment.(a) Content of lipid species of 4-week-old WT, ACBP3-OEs (OE-1 and OE-4) and AC
APHOTOFUNGI - Photographic Stock Image Library Page for Abortiporus biennis - Blushing Rosette (Polyporale images). A-P-H-O-T-O - Furthering environmental awareness and education through the medium of photography.
Get all wrapped up in holiday style with a wreath of Black Velvet Rosettes that does double duty as a Headwrap or a choker from Scünci.
Emtek Solid Brass Mercury Lever With Disk Rosette (Several Finishes). Vintage and Modern Style Emtek Door Hardware with Free Shipping Offer Available.
The present study has documented the feasibility of our immunomagnetic assay for detecting micrometastatic cells in BM samples from CRC patients. In model experiments, a mean of 98% of the cells bound at least five beads to their surface in 11 of 12 CRC cell lines. Moreover, a consistently high recovery of target cells was achieved when different numbers of Co205 cells were mixed with 1 × 107 MNCs from BM and isolated with immunomagnetic beads, even when very small numbers of tumor cells were added. Furthermore, rosetted tumor cells were detected in 17% of BM samples obtained at primary surgery from 275 patients with CRC with a median of eight cells isolated per positive sample.. The overall frequency (17%) of positive samples from the CRC patients examined in the present study is lower than in many of the published reports using other methods. Thus, studies performed using immunocytochemical techniques report overall frequencies between 27 and 32% positive samples in population sizes of ...
Due to the latter, I think that is why Joomla continues to confuse me so. I have been open to learning it, as I know there will be a client who desires a Joomla site some day and I want to at least have some facts I can advise them on. Joomla has a method of its madness that I still to this day do not understand. I suppose to many people I speak to, categories and sections seem to feel like they are the same thing. This forum post shows a good example on how it confuses many not familiar with Joomlas older cousin, Mambo. I was patient and found myself toiling over it in the last month trying to learn the interface. I cant lie and say that I wont get a client who insists on having a Joomla based website ...
Due to the latter, I think that is why Joomla continues to confuse me so. I have been open to learning it, as I know there will be a client who desires a Joomla site some day and I want to at least have some facts I can advise them on. Joomla has a method of its madness that I still to this day do not understand. I suppose to many people I speak to, categories and sections seem to feel like they are the same thing. This forum post shows a good example on how it confuses many not familiar with Joomlas older cousin, Mambo. I was patient and found myself toiling over it in the last month trying to learn the interface. I cant lie and say that I wont get a client who insists on having a Joomla based website ...
A versatile and adjustable means for attaching a rosette-mounted EVF to your camera, the Zacuto Axis Mini is an ENG-style mount that is designed to attach to the top of your camera setup and provide you with ample room for adjusting focus or working with large lenses. It attaches directly to rigs fitted with a 15mm rod port and then connects with EVFs, such as the Gratical HD, using a secure 1/4-20 rosette mount, or can also be used with 1/4-20 screw mount EVFs with the separate Quad Rail for mounting.
The ability of Plasmodium falciparum-infected red blood cells (RBC) to form spontaneous erythrocyte rosettes was studied in 130 fresh isolates from Gambian children with cerebral or uncomplicated malaria from August to November 1990. All isolates (24 of 24) from patients with cerebral malaria formed rosettes, but only 61 of 106 isolates from children with uncomplicated malaria formed rosettes. The mean rate of rosette formation in isolates from children with cerebral malaria (28.3%) was significantly greater than that in isolates from children with uncomplicated malaria (8.5%). Giant rosettes were more frequently formed in isolates from patients with cerebral malaria than in those from patients with uncomplicated malaria. Sera of children with cerebral disease generally lacked anti-rosette activity, while many sera from children with uncomplicated malaria showed strong anti- rosette activity when tested against the patients ow parasites. Some sera that were devoid of autologous rosette-disrupting
TY - JOUR. T1 - Paramecium fusion rosettes. T2 - Possible function as Ca2+ gates. AU - Satir, Birgit H.. AU - Oberg, Stephen G.. PY - 1978. Y1 - 1978. N2 - The function of a specific intramembrane particle array, the fusion rosette, an essential requirement for exocytosis of trichocysts in Paramecium, was probed with a temperature sensitive secretory mutant (nd9). The cells were grown at 27°C, the nonpermissive, nonreleasing temperature at which fusion rosettes do not assemble. Exocytosis could be triggered, nonetheless, by addition of 40 μM ionophore A23187 and 15 mM Ca2+ but not Mg2+. Rosette function is bypassed by this procedure, suggesting that during normal release, the rosette acts as a Ca2+ channel that allows development of a site-specific increase in Ca2+, which in turn induces fusion and release.. AB - The function of a specific intramembrane particle array, the fusion rosette, an essential requirement for exocytosis of trichocysts in Paramecium, was probed with a temperature ...
In a previous study employing conventional immunological marker analysis we found that 17% of high grade malignant lymphomas were devoid of cytoplasmic and membrane immunoglobulin and also sheep erythrocyte receptors. Cryostat sections from 24 of these cases (four of low grade and 20 of high grade malignancy) were stained with a panel of 30 monoclonal antibodies and six polyclonal antisera using a sensitive immunoperoxidase method. All tumours expressed the leucocyte common antigen (detected by monoclonal antibody 2D1) and all lacked epithelial cytokeratin (monoclonal antibody LE61), confirming their haematopoietic origin. All but one of the lymphomas expressed antigens characteristic of either B cells (17 cases) or T cells (six cases), while one case (morphologically a centroblastic lymphoma) had an unusual dual phenotype in which strong staining for T6 (marker of immature T cells) was associated with expression of the pan B lymphocyte antigens detectable with To15, anti-B1, anti-Leu12. This ...
It was the purpose of this study to characterize the proliferating cells in skin lesion of Sézarys syndrome and of mycosis fungoides by means of their surface markers and their response to Phytohemagglutinine mitogen stimulation. Viable infiltrating cells were freed from skin biopsy specimens by means of a disaggregating homogenizer and the cells yielded were tested with heterologius polyvalent anti-human Ig and with anti-human T-cell globulin, as well as for spontaneous rosette formation with sheep red blood cells (SRBC) and for their response to stimulation with Phytohemagglutinine. Most of the infiltrating cells in skin lesions of mycosis fungoides and Sézarys syndrome lack receptors for anti-human Ig but form spontaneous rosettes with SRBC and have receptors for anti-T-cell globulin, indicating the T-lymphocyte nature of the infiltrating cells; however, their response to Phytohemagglutinine is weak. The results indicate the atypical, presumably neoplastic, nature of T-lymphocytes proliferating
In the present work we studied the expression of membrane-bound Ig (MBIg) as well as receptors for IgG Fc and complement on nine human lymphoblastoid cell lines. When MBIg and receptors for IgG Fc were compared, four categories of cell lines could be distinguished: (a) cell lines having both MBIg and receptors for IgG Fc, (b) cell lines having MBIg but lacking receptors for IgG Fc, (c) cell lines lacking MBIg but having receptors for IgG Fc, and (d) cell lines lacking both MBIg and receptors for IgG Fc. Two types of receptors for complement could be detected on the cell lines studied, one for C3-C3b and one for C3d. When sensitized red cells carrying C3b or C3d were used for rosette tests, three categories of cell lines could be distinguished: (a) cell lines having receptors for C3b and C3d, (b) cell lines having receptors only for C3d and (c) cell lines lacking both receptors. However, when a more sensitive immunofluorescent method was used instead of the rosette technique, it was found that ...
Glucocorticoid receptor levels were quantitated in leukemic blasts from bone marrow aspirates of 174 children with acute lymphocytic leukemia. Using a whole-cell assay, we found that [3H]dexamethasone binding had the following characteristics: (a) reached a steady state in 30 min at 22° and was stable for at least 2 hr; (b) was linear with cell number between 1 and 6 × 106 cells/assay; (c) was higher in freshly prepared blasts compared to blasts stored for 18 hr at 4 or 22°; (d) was specific for glucocorticoids; (e) had a Kd of ≈1 × 10-8 m; and (f) required a postincubation washing step to maximize sensitivity and decrease nonspecific binding. Glucocorticoid receptor levels in patient samples exhibited a wide range from 2,248 to 79,364 sites/cell (median, 18,123). A lower level was correlated with the following biological and clinical characteristics at diagnosis: high leukocyte count; positive sheep erythrocyte rosette test; T-cell surface antigens; presence of mediastinal mass; age ,2 or ...
Rosette Rose,U+1F3F5,Cherry Blossom,Military Medal,Large Blue Circle,Diamond Shape With A Dot Inside,Fleur-De-Lis,Heart Decoration,Classical Building,Blossom,screw,tangle,nexus,twist,whorl,braid,bunch,whirl,spiral,snag,tie,warp,joint,snarl,yoke,splice,coil,hitch,kink,twirl,link,bond,helix,mat,gnarl,line,truelove knot,lovers knot,red,connection,contortion,entanglement,ligament,ligature,perplexity,rosette,vinculum,badge of loyalty,true lovers knot,blush,flush,pink,rouge,knot,love knot,rose,Rosétte,Rosette,cunt,flap,jodie,rosétta,brownlow,badge,ornament,medal of honor,lucifer,rorieea,flossy,tillie,creepyspice,jeff,arielxtriton,trixie nightshock,red,pink,blush,burn,color,color up,crimson,flame,glow,go red,mantle,pinken,redden,rose,rouge,suffuse,be suffused,blare,blaze,brighten,fill,flare,flush,gleam,glimmer,glisten,glitter,ignite,kindle,light,shine,smolder,thrill,tingle,twinkle,coral,fuchsia,roseate,salmon,bittersweet,bloodshot,blooming,brick,burgundy,cardinal,carmine,cerise,cherry,chestnut,claret
TY - JOUR. T1 - Protein A-coated erythrocyte binding to cell surface antigens. T2 - Application to quantitate retrovirus infectivity in vitro. AU - Fitting, Thomas. AU - Kabat, David. N1 - Funding Information: ACKNOWLEDGMENTS The research was supported by Grant PCM791372 from the National Science Foundation and in part by Grant CA23032 from the U. S. Public Health Service. T.F. was supported by a predoctoral training grant from the U. S. Public Health Service.. PY - 1981/6. Y1 - 1981/6. N2 - Fibroblasts infected with murine leukemia virus (MuLV) bind erythrocytes coated with protein A to form rosettes in the presence of MuLV-specific antisera. This method, which is potentially applicable to any retrovirus and susceptible cell, has been specifically adapted as a focus assay for quantitating both ecotropic and xenotropic MuLV.. AB - Fibroblasts infected with murine leukemia virus (MuLV) bind erythrocytes coated with protein A to form rosettes in the presence of MuLV-specific antisera. This method, ...
id:160386023560,handle:all,title:All Products,updated_at:2021-09-22T15:07:11-07:00,body_html:,published_at:2019-12-30T22:53:39-08:00,sort_order:best-selling,template_suffix:,disjunctive:false,rules:[{column:variant_price,relation:greater_than,condition:0}],published_scope:web,image:{created_at:2020-03-04T10:58:37-08:00,alt:null,width:1600,height:400,src:https:\/\/cdn.shopify.com\/s\/files\/1\/0279\/2810\/1000\/collections\/allproducts.jpg?v=1583348318}},{id:160356237448,handle:rosette-polyester-satin,title:Satin Rosette,updated_at:2021-05-13T13:50:52-07:00,body_html:,published_at:2019-12-30T17:14:27-08:00,sort_order:best-selling,template_suffix:,disjunctive:true,rules:[{column:tag,relation:equals,condition:Rosette Polyester ...
have the characteristic pineocytomatous/neurocytic rosettes, which is an irregular circular/flower-like arrangement of cells with a large meshwork of fibers (neuropil) at the centre.[1] Pineocytomatous/neurocytic rosettes are superficially similar to Homer Wright rosettes; however, they differ from Homer Wright rosettes as they have (1) more neuropil at centre of the rosette and, (2) the edge of neuropil meshwork irregular/undulating ...
Remington Rosette. A vertical pedigree lists the siblings of each dog in the pedigree. Siblings are found by searching for dogs in the database with the same parents. They may be from the same litter or from another breeding of the same parents. In most cases, this pedigree will be incomplete, as not all dogs have all their siblings entered in the database.. Vertical pedigree: ...
H&M Black Cropped Sweater, Pacsun Tribal Skirt, H&M Velvet Boots, Forever 21 Rosette Ring styled by Lauren Oberlin in THOSE SLEEPLESS NIGHTS-see looks like this and more on LOOKBOOK.
Rose gardeners throughout the country need to be vigilant in watching for the symptoms of an increasingly common problem known as rose rosette disease.
Habit: Annual, stiff-hairy basally (glabrous throughout). Stem: (0.8)1.5--9(12) dm, simple to branched throughout. Leaf: basal not rosetted, petioled, early-deciduous, coarsely dentate to +- lobed; mid-cauline sessile, 1--12 cm, lance-linear to oblanceolate, entire to coarsely dentate, leaf base lobed to clasping; distal similar, reduced, generally entire. Inflorescence: open, 1-sided or not; terminal sterile flower cluster 0. Flower: calyx bilateral, sepals (3)5--10(13) mm, lanceolate to broadly ovate, white to yellow, rose, purple, or purple-black, glabrous or bristles sparse; petals 7--17 mm, 1--3 mm wide, +- equal or adaxial pair longer, crinkled; filaments in 3 pairs of unequal length; longest pair fused, 5--13 mm; fertile anthers 1--2.5 mm. Fruit: ascending to spreading or reflexed, 3--11 cm, 1.5--2.5 mm wide, straight or curved, not constricted between seeds; valve midveins distinct, glabrous or sparsely to moderately hairy; stigma +- entire; pedicels ascending to spreading, 0.2--3.2 cm. ...
Artikkelens utgangsspørsmål er ganske klart: Er det forskjell på antall skapte embryoer per syklus hos seksuelt aktive kvinner som bruker spiral, jevnført med kontrollgrupper av kvinner som ikke bruker prevensjon? Majoriteten av de 76 referansene er publisert på 1970 og -80-tallet.. For å komme så tett på konsepsjonen som mulig, kombinerer forfatterne resultatene fra to studier som måler early pregnancy factor (EPF) i serum. Faktoren kan detekteres 1-2 dager etter befruktning (2, 3). Alle kvinnene hadde samleie rett før ovulasjon. Kontrollgruppen hadde positiv EPF-faktor i 69% av syklusene og av disse overlevde 22% av embryoene til etter implantasjon (14 dager). Kvinner med ulike typer spiral viste positiv EPF-faktor i 26%, men ingen «overlevende». Forskere har gått enda lenger og i denne situasjonen skylt ut egg fra tube og livmor og undersøkt utviklingen med elektronmikroskop. I en studie var eggene til kontrollgruppen befruktet i 77% og av disse utviklet 57% seg normalt (4). Hos ...
Fasade Glue-up decorative thermoplastic ceiling panels provides the classic look of Traditional tin ceilings for a fraction of the cost. Whether you are remodeling an entire room or simply accenting a
Part or all of this entry has been imported from the 1913 edition of Websters Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing ...
I worked on the piped cookies first as I was feeling excited at the thought of piping cookies...this is something I have not done before. The recipe is straight forward and down right simple...requires minimum ingredients and the dough was done in no time. The only difficult part was piping them! I thought I could use my Wilton 2D decorating tip as it gives very impressive rosettes just like this one I did. To my dismay, the tip is not suitable for piping the cookies, the dough which pass through the gaps on the tip was just too thin. Fortunately I have another huge star tip, a Wilton 1C, this one worked quite well. Although I was able to pipe decent looking rosettes they are nothing close to what I had in mind. I can only blame my lack of skill. I am quite hopeless at piping...I do not know the right technique to position the tip and I am totally clueless how to create a nice swirl?! I though it would be easier to pipe pretty swirls with a cookie dough since it is firm, but I was wrong ...
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Centers RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.. ...
many of the roses in my garden are suffering with something unusual. I hope it isnt rose rosette disease. The nearest thing I can find to it is damage by weed killer. I dont use any. I have also seen it in another garden down the road about a mile and a half. I live rurally ...
Summary - Step 1: Clean the surface - Step 2: Prepare the media - Step 3: Locate the location - Step 4: Install the moldings - Step 5: Do the finishing touches - Step 6: Cut the cornices - Step 7: Place a rosette Ceiling moldings are ornaments of various shapes and styles that […]. ...
Prized rosebushes in North Texas are at risk from an infection called Rose Rosette. The disease is incurable and has already cost Southlake about a half
A common reference is to a 1990 study in the journal Immunology, but the reference is hardly satisfactory as a demonstration of the alleged harm of stearic acid. This was a test tube study that has not been replicated in living beings, with an artificial situation providing high concentrations of stearic acid exposed to isolated immune cells for hours at a time. It was actually done as a way to investigate whether prolonged high dose stearic acid administration could possibly be used to suppress the immune system for an autoimmune disease treatment. (5) It was definitely NOT a demonstration that this would work the same way with dietary supplements or with foods containing stearic acid. The effect was dose- and time- dependent; with a sustained, prolonged exposure over an 8-hour period that is impossible to replicate in the living human body. For a test tube study, it would first have to be shown that the mechanism was valid in vivo before it could be considered reasonable to extrapolate it to ...
Carlqvist, P.; Gahm, G. F.; Kristen, H. (2002). "Formation of Twisted Elephant Trunks in the Rosette Nebula". Astrophysics and ... The Rosette Nebula is an example of an unusual shape that an elephant trunk can assume. It has a double helix structure instead ... The EGGs and the column of gas "downwind" from them are the basic formations of an elephant trunk. Elephant trunks form on the ... "Dynamical models for the formation of elephant trunks in H ii regions". Whitlock, Laura. "What is a light year and how is it ...
... higher-ordered rosette formations have been observed in which five or more cells meet at a vertex. Multicellular rosettes form ... Blankenship, J. T., Backovic, S. T., Sanny, J. S., Weitz, O. and Zallen, J. A. (2006). Multicellular rosette formation links ... Neighbor exchange and multicellular rosette formation involve oriented junctional remodeling, which indicates that the ...
At maturity the plant may lose its characteristic basal rosette formation. Leaves are approximately 1-3 cm in length and ...
It can inhibit rosette formation and interacts with heparin, thrombospondin, and plasminogen. Two of the protein's effects, the ... Shatsky M, Saigo K, Burdach S, Leung LL, Levitt LJ (May 1989). "Histidine-rich glycoprotein blocks T cell rosette formation and ... Leung LL, Nachman RL, Harpel PC (January 1984). "Complex formation of platelet thrombospondin with histidine-rich glycoprotein ... Silverstein RL, Leung LL, Harpel PC, Nachman RL (November 1984). "Complex formation of platelet thrombospondin with plasminogen ...
Microscopic view of a typical neuroblastoma with rosette formation. Specialty. Oncology. Symptoms. Bone pain, lumps[1]. ... On microscopy, the tumor cells are typically described as small, round and blue, and rosette patterns (Homer Wright rosettes) ... Homer Wright rosettes are tumor cells around the neuropil, not to be confused with pseudorosettes, which are tumor cells around ... He also noted the circular clumps of cells in bone marrow samples which are now termed "Homer Wright rosettes". Of note, "Homer ...
"Equilibrium freezing of leaf water and extracellular ice formation in Afroalpine 'giant rosette' plants". Planta. Springer- ...
"Equilibrium freezing of leaf water and extracellular ice formation in Afroalpine 'giant rosette' plants". Planta. 162 (3): 276- ... Giant rosette senecios form single-aged stands that drive community structure over decades. Many plant species in the Afro- ... One adaptation is known as the giant rosette, which is exhibited by giant senecio, giant lobelia and giant thistle (Carduus), ... ISBN 978-0-7146-1812-8. Speck, Heinrich (1982). "Soils of the Mount Kenya Area: Their formation, ecology, and agricultural ...
The rosette formation of germline cyst cells allows cells to be in the closest configuration for communication. Throughout the ... 2004). Formation, architecture and polarity of female germline cyst in Xenopus. Dev Biol 266: 43-61. doi:10.1016/j.ydbio. ... 1997). Germline cyst formation in Drosophila. Annu. Rev. Genet. 31: 405-428. DOI: 10.1146/annurev.genet.31.1.405 Yamashita, Y. ... Asymmetric fusome partitioning and new formation followed by fusion occurs at each mitotic division. In spermatogenesis, the ...
Plant parts may also appear desiccated and distorted or display the formation of rosettes. High pest densities can cause ... followed by severe damage at tiller formation. In the summer of 1990, the aphid appeared as a major pest of a squash crop in ...
Rosette rock is a radial array of basalt columns. Rosette rock formation seen about 500 metres (1,600 ft) upstream of the Organ ... Frequent access to this formation is likely to cause deterioration of this formation. ... Its formation is attributed to the cooling of "a pocket of lava, probably in a spherical cave formed from an earlier lava flow ... The width of each pipe in the formation is about 1 metre (3 ft 3 in); only some of the columns are vertical while most other ...
Yadon's piperia exhibits a single veined flower one to two millimeters in width and a basal rosette leaf formation. The ... A basal rosette of leaves develops from the tuber at the surface of the soil, each of the two or three leaves being lanceolate ...
Skin associated with the scapular blade is the largest, arranged in rosettes (spiral formations) with a smooth, hexagonal shape ... from the Upper Triassic Ischigualasto Formation of northwestern Argentina". ZooKeys. 63 (63): 55-81. Sereno, Paul; Martinez ...
... "onyx crusts and rosettes", stalactites and stalagmites, and "a petrified waterfall". Two named formations were the "Capitol ... Stalactites, stalagmites, and onyx crusts and rosettes are present. "Capitol Dome" is a stalagmitic deposit upon one wall which ... is a small cavern containing crystal formations located in Clay, Alabama, USA. The cavern was discovered in 1840 by a Thomas ... "beautiful formations" including what appeared to be "metallic draperies". In 1946, however, biologist Edward McCrady described ...
Asexual reproduction occurs by spores, by fragmentation of the rosettes, and by formation of apical tubers. Spores are large ( ... the thallus may be strap-shaped and about 0.5 to 4 mm wide with dichotomous branches or may form rosettes or hemirosettes up to ...
... fibrous histiocytoma-like areas can be observed as well as neurofibromatous and neuroblastic components with rosette formation ...
... distorted leaf growth with exaggerated rosette formation. Some strains of celery mosaic virus cause a "crinkled" pattern to ...
A rosette is a cell formation in a halo or spoke-and-wheel arrangement, surrounding a central core or hub. The central hub may ... Homer Wright rosettes are considered "pseudo" in the sense that they are not true rosettes. True rosettes are Flexner- ... A rosette is a structure or formation resembling a rose, such as the clusters of polymorphonuclear leukocytes around a globule ... A Flexner-Wintersteiner rosette is a spoke-and-wheel shaped cell formation seen in retinoblastoma and certain other ophthalmic ...
Progesterone induces formation of tertiary side-branches in the mammary glands during puberty and during the luteal phase of ... The production of progesterone at this time induces embryroid body (akin to blastulation) and rosette (akin to neurulation) ... Estrogens and progesterone promote mammary epithelial cell proliferation resulting in the formation of the primary and ... or rosettes (neurulation). RU-486, a drug commonly used to terminate pregnancy in its early stages, acts not only to abort the ...
The typical size of such groups is three individuals (larger groups, up to nine, are rare), arranged in a "rosette" formation ... The rosette also orients their less critical tails, containing mechanoreceptors that comprise a secondary warning system, ...
... that underwent seasonal arid conditions and playa lake formation as indicated by the presence of fossil gypsum rosettes and ... It overlies the Abrahamskraal Formation (the western correlate of the Middleton Formation). The Teekloof Formation does not ... The Teekloof Formation is a geological formation that forms part of the Beaufort Group, one of the five geological groups that ... The Teekloof Formation is the uppermost formation of Adelaide Subgroup deposits West of 24ºE and contains Middle to Late ...
S. rosetta has been named for the rosette-shaped colonies formed by its cells. Recent studies show a bacterial sulfonolipid, ... called rosette inducing factor (RIF-1) produced by Algoriphagus machipongonensis triggers colony formation in S. rosetta.[ ...
... is characterised by the formation of large, flat rosettes on a thick layer of rhizohyphae, the presence of a ...
Pig semen, like EPF, has been shown to inhibit rosette formation - the rosette inhibition test was positive for one day in sows ... Because the rosette inhibition assay for EPF is indirect, substances that have similar effects may confound the test. ... Smart YC, Roberts TK, Fraser IS, Cripps AW, Clancy RL (Jun 1982). "Validation of the rosette inhibition test for the detection ... Early pregnancy factor is tested for rosette inhibition assay. EPF is present in the maternal serum (blood plasma) shortly ...
Human peripheral blood T and B lymphocytes were separated by a method based on the stable rosette formation of T lymphocytes ...
... a rosette formation of gypsum and barite with sand inclusions "Desert Rose" (Sting song), a song on Sting's 1999 album Brand ...
... "rosette" formations around peripheral blood lymphocytes. Fudenberg was hired by the Special Projects Unit of the Council for ... He was editor of the journal Clinical Immunology and Immunopathology for 15 years and developed the Rosette test as well. ... Wybran, J.; Fudenberg, H. H. (1973). "Thymus-Derived Rosette-Forming Cells in Various Human Disease States: Cancer, Lymphoma, ...
... and is often covered in sharp spines and spicules that are organized in formations called rosettes. However, species with ...
... "true rosette" architecture Lacks structural cohesiveness Prominent pseudopapillae formation Localization mostly in cerebral ...
... published in 1910 Flexner-Wintersteiner rosette, a spoke and wheel shaped cell formation seen in retinoblastoma and certain ...
... namely the formation of podosome rosettes, otherwise known as invadopodia. SU6656 was initially published as a Src family ...
Prance, Ghillean Tolmie (1985). Leaves: the formation, characteristics and uses of hundreds of leaves found in all parts of the ... Leaves form a rosette.. Rows. The term, distichous, literally means two rows. Leaves in this arrangement may be alternate or ... Feugier, François (14 December 2006). Models of Vascular Pattern Formation in Leaves (PhD Thesis). University of Paris VI.. ... They were once thought to be typical examples of pattern formation through ramification, but they may instead exemplify a ...
A leaf rosette at the base may be present or absent. The leaves along the stem are almost always alternately arranged, rarely ... The monoculture formation of an herb layer carpet by this plant has been shown to dramatically alter forests, making them ... and few species have flowers that sit individually on flower stems that spring from the axils of rosette leaves. The ... alternatingly set leaves without stipules or in leaf rosettes, with terminal inflorescences without bracts, containing flowers ...
A basal whorl with a large number of leaves spread out in a circle is called a rosette. ... Phyllotaxis: An Interactive Site for the Study of Plant Pattern Formation at Smith College ...
... and is often covered in sharp spines and spicules that are organized in formations called rosettes. However, species with ...
Six-petaled rosette - a symbol of Rod, the supreme creator god of all things and kins according to the early Slavic religion. ... Although it explains the formation of regional Slavic groups in the Balkans, eastern Alps and the Morava-Danube basin, Lunt's ... processes initiated by the Slav expansion and subsequent demographic and ethnic consolidation culminated in the formation of ...
Cloud formation. Snow clouds usually occur in the context of larger weather systems, the most important of which is the low- ... Many more complex growth patterns also form such as side-planes, bullet-rosettes and also planar types depending on the ... Kenneth G. Libbrecht (January-February 2007). "The Formation of Snow Crystals". American Scientist. 95 (1): 52-59. doi:10.1511/ ... Highway anti-icing is the snow and ice control practice of preventing the formation or development of bonded snow and ice by ...
... from the Early Jurassic Kayenta Formation of Arizona. It is anatomically very similar to modern frogs.[9] The oldest known ... are carried one by one on the back of an adult to a suitable water-filled crevice such as the axil of a leaf or the rosette of ...
Almost all species have a tight cluster of leaves (a rosette), either at the base of the plant or at the end of a more-or-less ... In simultaneous microsporogenesis, there is no wall formation until all four cell nuclei are present. Liliales all have ... The leaves of almost all species form a tight rosette, either at the base of the plant or at the end of the stem, but ... Microsporogenesis (part of pollen formation) distinguishes some members of Asparagales from Liliales. Microsporogenesis ...
For the primary formation reaction, a = 6994104999999999999♠1.05×10−6 and B = −0.47. Assuming an NH4+ abundance of 3×10−7 and ... Rizk-Ouaini, Rosette; Ferriol, Michel; Gazet, Josette; Saugier-Cohen Adad; Marie Therese (2006). Oxidation reaction of ammonia ... Formation of other compoundsEdit. In organic chemistry, ammonia can act as a nucleophile in substitution reactions. Amines can ... After formation of ammonium from glutamine, α-ketoglutarate may be degraded to produce two molecules of bicarbonate, which are ...
... and diagnose issues with roller pressure and chemistry based on the shape of individual dots and rosettes.[citation needed] ... as well as the formation of the watch strap and installation of precious stones onto the watch face. Some families like Kruder ...
a b c Yailenko,Les maximes delphiques d'Aï Khanoum et la formation de la doctrine du dhamma d'Asoka, 1990, p. 243. ... The earliest known example in India, the Pataliputra capital (3rd century BCE) is decorated with rows of repeating rosettes, ... with a central anta capital with many rosettes, beads-and-reels, as well as a central palmette design.[45][56][57] Importantly ... ovolos and bead and reel mouldings, wave-like scrolls and side volutes with central rosettes, around a prominent central flame ...
May be butyrous, waxy, multilobate and even rosette clustered (dilute inocula). On Malachite green containing media, such as ... Surgery is generally indicated with extensive disease, abscess formation, or where drug therapy is difficult." Found world-wide ...
Dacos, N. La découverte de la Domus Aurea et la formation des grotesques à la Renaissance (London) 1969. Kort, Pamela (2004-10- ... In Michelangelo's Medici Chapel Giovanni da Udine composed during 1532-33 "most beautiful sprays of foliage, rosettes and other ... Sometimes the grotesque in literature has been explored in terms of social and cultural formations such as the carnival(-esque ...
a b c Yailenko,Les maximes delphiques d'Aï Khanoum et la formation de la doctrine du dhamma d'Asoka, 1990, pp.243. ... "flame palmettes" framing a lotus surrounded by small rosette flowers.. Ashoka is often credited with the beginning of stone ...
... is an annual (rarely biennial) plant, usually growing to 20-25 cm tall.[6] The leaves form a rosette at ... Trichome formation is initiated by the GLABROUS1 protein. Knockouts of the corresponding gene lead to glabrous plants. This ... However, these meioses can provide the adaptive benefit of recombinational repair of DNA damages during formation of germ cells ...
This may represent a predation or a scavenging event.[39][40] In the Sao Khua Formation of Thailand, isolated tooth crowns from ... The teeth in the front end of their lower jaws fanned out into a spoon-shaped structure similar to a rosette, which gave the ... A single baryonychine tooth was found from the mid-Santonian, in the Majiacun Formation of Henan, China.[55] ... The first fossils referred to a spinosaurid were discovered in 1912 at the Bahariya Formation in Egypt. Consisting of dorsal ...
"Equilibrium freezing of leaf water and extracellular ice formation in Afroalpine 'giant rosette' plants". Planta 162: 276-282. ... "Equilibrium freezing of leaf water and extracellular ice formation in Afroalpine 'giant rosette' plants". Planta (Springer- ... Marekebisho ni moja inayojulikana kama giant rosette, ambayo ni kubwa exhibited by senecio, lobelia na giant thistle (Carduus). ... "Soils of the Mount Kenya Area: Their formation, ecology, and agricultural significance". Mountain Research and Development 2 ...
Fossil material assigned to this taxon originates from the Yixian Formation of northeastern China, dated to the Early ... At first, it grows a rosette of leaves while building up the enlarged taproot. Fast-growing cultivars mature within three ...
Standardization of in vitro Lily (Lilium spp.) plantlets for propagation and bulb formation. Proceedings of International ... forming dwarf stem bearing a basal rosette of leaves until, after they have received sufficient chilling, the stem begins to ...
Formation. Main article: Galaxy formation and evolution. The Milky Way began as one or several small overdensities in the mass ... The globular clusters can follow rosette orbits about the Milky Way, in contrast to the elliptical orbit of a planet around a ... I. Formation of molecular gas disks". The Astrophysical Journal Supplement Series. 214 (1): 1. arXiv:1407.6873 . Bibcode: ... galaxies that lack star formation). Star-formation activity in green valley galaxies is slowing as they run out of star-forming ...
... rosette and succulent epiphytes (Asparagales), mycoheterotrophs (Liliales, Dioscoreales, Pandanales), all in the lilioid ... Monocotyledonous anther wall formation*. *Successive microsporogenesis. *Syncarpous gynoecium. *Parietal placentation. * ...
Once itself is believed to have arisen by back-formation from an earlier variant of lynx, lonce - the "l" of lonce was ... The snow leopard's fur is whitish to gray with black spots on head and neck, but larger rosettes on the back, flanks and bushy ... they have full black spots which turn into rosettes as they grow to adolescence.[citation needed] ...
The most important cause of AK formation is solar radiation, specifically UV-B radiation (wavelength 290-320). UV-B radiation ... Polarized contact dermoscopy of AKs occasionally reveals a "rosette sign," described as four white points arranged in a clover ... Eventually, this leads to the formation of AKs. In particular, mutations in the p53 tumor suppressor gene have been found in 30 ... recent research has been focused on the role of the p53 tumor suppressor gene in AK formation.[24] This tumor suppressor gene, ...
Output from the inferior peduncle is via efferent fibers to the vestibular nuclei and the reticular formation. The whole of the ... Within the granular layer, a mossy fiber generates a series of enlargements called rosettes. The contacts between mossy fibers ... Each glomerulus has a mossy fiber rosette at its center, and up to 20 granule cell dendritic claws contacting it. Terminals ... generating a total of 20-30 rosettes; thus a single mossy fiber makes contact with an estimated 400-600 granule cells.[8] ...
Following the Sonderbund war and the formation of the Swiss Federal State, Zürich voted in favour of the Federal constitutions ... and the rosette in the southern transept (1978) are by Marc Chagall; also the church of Zürich's largest choir with 100 and ...
Bachmann, Alexander; Rosette, Jean de la (2011-11-24). Benign Prostatic Hyperplasia and Lower Urinary Tract Symptoms in Men. ... Hyperplasia (from ancient Greek ὑπέρ huper, "over" + πλάσις plasis, "formation"), or hypergenesis, is an increase in the amount ...
The Kayenta Formation is part of the Glen Canyon Group that includes formations in northern Arizona, parts of southeastern Utah ... They pointed out that the ends of the jaws were expanded to the sides, forming a "rosette" of interlocking teeth, similar to ... though the dinosaur itself is not known from the formation, which is slightly older than the Kayenta Formation.[37] Weems ... Kayenta Formation deposition was ended by the encroaching dune field that would become the Navajo Sandstone.[61] A definitive ...
However, the place of atomic oxygen in accounting for the formation of chlorine is not as plausible as another theory based on ... Rizk-Ouaini, Rosette; Ferriol, Michel; Gazet, Josette; Saugier-Cohen Adad; Marie Therese (1986). "Oxidation reaction of ammonia ...
Alexander the Great and Bactria: The Formation of a Greek Frontier in Central Asia, Frank Lee Holt, Brill Archive, 1988, p.2 [1 ... Designs with rosette flowers, geometric lines, and glass inlays, suggestive of Egyptian, Persian, and/or Hellenistic influences ...
Red blood cell (RBC) rosette formation is one type of cytoadherence and appears to be associated with knob formation, ... Since Plasmodium coatneyi-infected RBCs develop knobs and sequester, we hypothesized that they also form rosettes. RBCs from P ... allowed to mature overnight in vitro and found to form rosettes as hypothesized. This observation adds to the known falciparum- ... Red blood cell (RBC) rosette formation is one type of cytoadherence and appears to be associated with knob formation, ...
Taken together, adhesion to C32 melanoma cells starts prior to that of rosette formation, immunoglobulin binding, or serum- ... rosette formation) during a complete 48-hr life cycle of the parasite. The C32 melanoma cell binding started at about 12 hr and ... with rosette formation and an immunoglobulin binding rate of about 50%, which decreased to about half of the peak values at the ... was seen during the whole life cycle with a peak around 28 hr (650 infected erythrocytes/100 C32 melanoma cells). Rosettes ...
... size restriction of apical membranes and cell shape changes during rosette formation. In addition, rosette formation appears to ... These differences in the rosettes are further substantiated by the finding that proneuromast rosette formation involves the ... By comparison, rosette formation within the Drosophila germ band is not restricted to the apical surfaces and appears to be ... The formation of cellular rosettes is involved in tissue morphogenesis during Drosophila germ band elongation (Blankenship et ...
... reactivity is primarily specific for xenoprotein determinants adsorbed to antigen-presenting cells during rosette formation ... reactivity is primarily specific for xenoprotein determinants adsorbed to antigen-presenting cells during rosette formation ...
Following rosette formation, rosette centers may open to form a central lumen. (B) During rosette formation via planar ... Similar to rosette formation in other contexts, rosette formation in the Drosophila eye disc is myosin-II dependent; rosettes ... Rosette formation during Drosophila ommatidial development. (A) Lines of up to ten cells form prior to rosette formation, with ... Rosette formation in adults and in vitro. In addition to the multiple modes of rosette formation observed during embryonic ...
... but only 61 of 106 isolates from children with uncomplicated malaria formed rosettes. The mean rate of rosette formation in ... Some sera that were devoid of autologous rosette-disrupting activity were able to disrupt rosettes formed in other isolates, ... indicating the presence of different rosette formation mechanisms. Forty percent (6 of 15) of the sera from patients with ... establish a strong association between rosette formation in P. falciparum-infected RBC and cerebral malaria. ...
Pathologists should be aware of rosette formation in osteosarcoma to avoid misdiagnosis as other rosette forming tumors of bone ... Rosette formation is a rare, recently reported variation in osteogenic sarcoma and is thought to be associated with a poor ... Jambhekar NA, Shet TM, Das L. Rosette formation in osteosarcoma. Indian Journal of Pathology & Microbiology. 2004 Jan; 47(1): ... In our opinion rosettes in an osteosarcoma should be documented both from a differential diagnostic point of view and also to ...
This protocol describes an in vitro assay to monitor rosette formation by P. falciparum-infected red blood cells, including ... procedures for rosette enrichment, maintenance of rosetting phenotype and assays for rosetting with RBC labeled using ... Figure 2: Rosette formation of VarO-iRBC with PKH-labeled recipient RBCs. A. Rosette formed upon incubation with PKH 67-labeled ... Rosette formation assay with RBCs labeled using lipophilic fluorescent probes. Analysis of rosette-forming iRBC preference can ...
Moiré is a more or less disruptive pattern formation in multicolour printing. Rosette formation e.g. in offset printing cannot ... In gravure moiré formation can be prevented through different cell forms in four colour printing. ...
Alveolar macrophage-lymphocyte rosette formation: failure of levamisole to alter activity.: Levamisole, an anthelminthic agent ... Alveolar macrophage-lymphocyte rosette formation: failure of levamisole to alter activity.. Authors * R L Ziprin ... does not alter in vitro macrophage-lymphocyte rosette formation between sheep alveolar macrophages and autochthonous ...
Sevuparin disrupts P. falciparum rosette formation in a dose dependent manner and inhibits cytoadherence to endothelial cells. ... The effects of sevuparin on rosette formation and cytoadherence of Plasmodium falciparum isolates from Thailand were ... causing rosette formation) contribute to microcirculatory flow obstruction in vital organs. Heparin can reverse the underlying ... The proportion of Pf-iRBCs forming rosettes ranged from 6.5% to 26.0% (median = 12.2%). Rosetting was dose dependently ...
... during neural rosette formation. Human ESCs were plated out and differentiated towards neural rosette formation, during which ... The formation and function of lumens in neural rosettes. (A) The involvement of apoptosis in lumen formation during neural ... Neural rosette formation comprises five steps of cell morphological changes. To elucidate the function of neural rosettes, we ... The effect of Ca2+ on neural rosette formation and maintenance. (A) Neural rosettes disassembled in a Ca2+-free environment (in ...
Rosette formation is restricted to specific brain regions. Rosettes are not formed in all brain regions at the same strength. ... in which rosettes of photoreceptor cells are induced by N-cadherin blockage (Matsunaga et al., 1988b). Rosette formation in the ... Rosette formation starts with a breaking up of the ventricular lining, followed by a folding in of parts of the neuroepithelium ... Regional formation of rosettes in the diencephalon. In situ hybridization and thionine (Nissl) staining of 12-μm-thick ...
Superstructural Variety from an Alkylated Triazine: Formation of One-Dimensional Hydrogen-Bonded Arrays or Cyclic Rosettes ...
The adhesion of normocytes to the PvIRBC is strong (mean binding force of 440pN) resulting in stable rosette formation even ... This study highlights correlation between rosette formation and altered membrane deformability of P. vivax-infected ... erythrocytes, where the rosette-forming infected erythrocytes are significantly more rigid than their non-rosetting ... Rheopathologic Consequence of Plasmodium vivax Rosette Formation. Zhang R., Lee W-C., Lau Y-L., Albrecht L., Lopes SCP., Costa ...
We use cookies to ensure that we give you the best experience on our website. If you click Continue well assume that you are happy to receive all cookies and you wont see this message again. Click Find out more for information on how to change your cookie settings ...
Rheumatoid Arthritis High Avidity Rosette Formation Myeloma Protein Leucocyte Migration Inhibition These keywords were added by ... Sharpin, R. K. C. and Wilson, J. D. (1977). Increased EA-rosette formation by lymphocytes from patients with rheumatoid ... Opsonic adherence of sensitized ox red cells to human lymphocytes as measured by rosette formation. Int. A.rch. Allergy, 44, ... binding properties of the Fc receptors detected by Facb rosettes and high avidity EA rosettes. In: Willoughby D.A., Giroud J. ...
Differentiating EBs (Rosette Formation) and Midbrain Specification *After culturing the EBs in EB medium for 4 days, transfer ... Feed the EBs every other day with fresh pre-warmed neural induction medium until early rosettes form (approximately 2-3 days). ... Label all differentiating colonies containing rosettes using a microscope marker.. *Using a 200-μL pipette tip pointing to the ... The rosettes will roll up to form neurospheres after about 1 day in the incubator. ...
Arnaiz, villena A.; Gyongyossy, M I.; and Playfair, J H., "Rosette formation by mouse lymphocytes. II. T-cell specificities in ... Rosette formation by mouse lymphocytes. II. T-cell specificities in a crl subpopulation. ...
Full text: Available Index: IMSEAR (South-East Asia) Main subject: Rosette Formation / Lymphoma, Non-Hodgkin / Aged / Female / ... Full text: Available Index: IMSEAR (South-East Asia) Main subject: Rosette Formation / Lymphoma, Non-Hodgkin / Aged / Female / ... This is a case report of rosette formation in non-Hodgkins lymphoma in the bone marrow. A 66 year old female on treatment for ... Rosette formation in non Hodgkins lymphoma in the bone marrow--a case report. ...
MOC31 Bead Rosette Formation with CRC Cell Line Cells.. In repeated experiments, 11 of the 12 cell lines consistently bound ... contained cells in BM that formed rosettes with the MOC31 beads. In positive samples, a median of eight tumor cells (range, 2- ... and no rosettes were observed with the control beads. ...
Rosette Formation Substances * Complement C3b Inactivator Proteins * Immunoglobulin Fab Fragments * Receptors, Complement ...
Rosette Formation * T-Lymphocytes / immunology Substances * Adjuvants, Immunologic * Plant Extracts ...
The longer the days the shorter the growing period, and vice versa. The reverse applies to the formation of morphine. This ... The length of the rosette stage is 43-50 days. Then comes the phase of stalk growth, which lasts 12-14 days. Budding lasts 10- ... Hot dry weather between the end of flowering and the period of technical ripeness causes the formation of large quantities of ... particularly when the seedlings are sprouting and growing and in the rosette and budding stages, to obtain rapid and regular ...
Goblet cells lay in linear or rosette-like formations. Finally, images of the Adipose class with low uncertainty show ... In the bottom example, only the lower left corner looks like mucosal glands forming rosette. The rest of the image contains ...
Microscopic view of a typical neuroblastoma with rosette formation. Specialty. Oncology. Symptoms. Bone pain, lumps[1]. ... On microscopy, the tumor cells are typically described as small, round and blue, and rosette patterns (Homer Wright rosettes) ... Homer Wright rosettes are tumor cells around the neuropil, not to be confused with pseudorosettes, which are tumor cells around ... He also noted the circular clumps of cells in bone marrow samples which are now termed "Homer Wright rosettes". Of note, "Homer ...
... which can contribute to rosette formation. This study is aimed at demonstrating whether the highly polymorphic PfEMP1-DBLα ... occurring among Thai isolates causing severe and uncomplicated malaria are associated with their ability to form rosettes and ... Rosette formation. Rosette formation was performed using 100 μl of fresh PRBC suspension mixed with 2 μl of 0.01% acridine ... The rosette formation was calculated as the ratio of the numbers of rosette to the total number of parasitized red blood cells. ...
Rosette Formation. Chemical. Reg. No./Substance: 0/Immunoglobulins; 0/Polyethylene Glycols; 0/Rh-Hr Blood-Group System; 0/Rho(D ... The rosette test was the most sensitive, consistently detecting fetal cells at concentrations of 0.25 percent or greater. FC ... Three qualitative methods (micro Du, rosette test, and PEG Du) and two quantitative methods (acid elution and FC) for assessing ...
This spectacular image shows the Rosette star formation region, which is located about 5,000 light years from Earth. X-rays ... Return to Rosette Nebula (September 8, 2010). CXC Home , Search , Help , Site Map , Image Use Policy , Latest Images ... The Rosette Nebula has long been a favorite target of amateur astronomers in the constellation the Unicorn. The wispy colorful ... of the X-ray and optical data lead astronomers to believe that stars are still forming in the central cluster of the Rosette, ...
... rosette-like formation; ,10 mitoses per 10 HPF; and vesicular nuclear chromatin) and the immunohistochemical demonstration of ...
  • Red blood cell (RBC) rosette formation is one type of cytoadherence and appears to be associated with knob formation, endothelial cell adhesion and sequestration of Plasmodium -infected RBCs. (ajtmh.org)
  • Since Plasmodium coatneyi -infected RBCs develop knobs and sequester, we hypothesized that they also form rosettes. (ajtmh.org)
  • The time course of cytoadhesion, immunoglobulin binding, rosette formation, and serum-induced agglutination of Plasmodium falciparum-infected erythrocytes. (ajtmh.org)
  • The ability of Plasmodium falciparum-infected red blood cells (RBC) to form spontaneous erythrocyte rosettes was studied in 130 fresh isolates from Gambian children with cerebral or uncomplicated malaria from August to November 1990. (ox.ac.uk)
  • Effects of sevuparin on rosette formation and cytoadherence of Plasmodium falciparum infected erythrocytes. (ox.ac.uk)
  • The effects of sevuparin on rosette formation and cytoadherence of Plasmodium falciparum isolates from Thailand were investigated. (ox.ac.uk)
  • Rheopathologic Consequence of Plasmodium vivax Rosette Formation. (ox.ac.uk)
  • Plasmodium falciparum isolates from different geographical areas showed variable binding ability to CD36 and ICAM-1 [ 8 , 9 ] and a wide range of ability to form rosettes [ 10 , 11 ], which may contribute to different clinical severity of malaria. (biomedcentral.com)
  • Pubmed ID: 12201576 Plasmodium falciparum isolates that form rosettes with uninfected red cells are associated with severe malaria in African children, although the mechanism by which rosetting contributes to severe disease is unknown. (jove.com)
  • Levamisole, an anthelminthic agent with immunostimulatory properties, does not alter in vitro macrophage-lymphocyte rosette formation between sheep alveolar macrophages and autochthonous lymphocytes. (mysciencework.com)
  • Opsonic adherence of sensitized ox red cells to human lymphocytes as measured by rosette formation. (springer.com)
  • Different rosette assays for detecting Fc receptor-bearing lymphocytes measure different subpopulations. (springer.com)
  • Increased EA-rosette formation by lymphocytes from patients with rheumatoid arthritis. (springer.com)
  • Increased subpopulation of 'null' lymphocytes in RA detected by Facb rosettes. (springer.com)
  • Rosette formation by mouse lymphocytes. (jax.org)
  • and Playfair, J H., "Rosette formation by mouse lymphocytes. (jax.org)
  • Elliott BE, Haskill JS (1973) Characterization of thymus-derived and bone marrow-derived rosette-forming lymphocytes. (springer.com)
  • Elliott BE, Haskill JS (1975) Rosette-forming ability of thymus-derived lymphocytes in humoral and cell-mediated immunity. (springer.com)
  • Elliott BE, Haskill JS, Axelrad MA (1975) Rosette-forming ability of thymus-derived lymphocytes in cell-mediated immunity. (springer.com)
  • Effect of Ozone on Human Cellular and Humoral Immunity: Characterization of T and B Lymphocytes by Rosette Formation. (epa.gov)
  • I. Thymus and marrow dependence of spontaneous rosette-forming cells in the mouse. (springer.com)
  • It is involved in spontaneous rosette formation with erythrocytes. (abcam.com)
  • Involved in T-cell adhesion processes and in spontaneous rosette formation with erythrocytes. (genecards.org)
  • Neighbor exchange and multicellular rosette formation involve oriented junctional remodeling, which indicates that the intercalating cells are intrinsically polarized within the plane of the epithelium. (wikipedia.org)
  • In particular, we have studied when the adhesive and antigenic modifications appear on the infected erythrocyte surface that mediate binding to C32 melanoma cells (cytoadherence) or to erythrocytes (rosette formation) during a complete 48-hr life cycle of the parasite. (ajtmh.org)
  • Human autologous mixed lymphocyte reactivity is primarily specific for xenoprotein determinants adsorbed to antigen-presenting cells during rosette formation with sheep erythrocytes. (rupress.org)
  • This study highlights correlation between rosette formation and altered membrane deformability of P. vivax-infected erythrocytes, where the rosette-forming infected erythrocytes are significantly more rigid than their non-rosetting counterparts. (ox.ac.uk)
  • The Rosette Nebula has long been a favorite target of amateur astronomers in the constellation the Unicorn. (harvard.edu)
  • In the image above, Herschel reveals star formation in a region of the Milky Way's Rosette Nebula . (scientificamerican.com)
  • The Rosette Nebula is an example of an unusual shape that an elephant trunk can assume. (wikipedia.org)
  • In this Review, we focus on the mechanisms that induce rosette formation, rather than those involved in rosette resolution. (biologists.org)
  • In SR/CR mice, cancer cells induce rapid infiltration of leukocytes that form rosettes around cancer cells, which then rapidly undergo cytolysis. (pnas.org)
  • The compound appears to be remarkably potent, with just nanomoles of the stuff necessary to induce rosette formation. (the-scientist.com)
  • RBCs from P. coatneyi -infected rhesus monkeys ( Macaca-mulatta ) were collected, allowed to mature overnight in vitro and found to form rosettes as hypothesized. (ajtmh.org)
  • This protocol describes an in vitro assay to monitor rosette formation by P. falciparum -infected red blood cells, including procedures for rosette enrichment, maintenance of rosetting phenotype and assays for rosetting with RBC labeled using lipophilic fluorescent probes. (bio-protocol.org)
  • All isolates (24 of 24) from patients with cerebral malaria formed rosettes, but only 61 of 106 isolates from children with uncomplicated malaria formed rosettes. (ox.ac.uk)
  • Giant rosettes were more frequently formed in isolates from patients with cerebral malaria than in those from patients with uncomplicated malaria. (ox.ac.uk)
  • Some sera that were devoid of autologous rosette-disrupting activity were able to disrupt rosettes formed in other isolates, indicating the presence of different rosette formation mechanisms. (ox.ac.uk)
  • This study is aimed at demonstrating whether the highly polymorphic PfEMP1-DBLα sequences occurring among Thai isolates causing severe and uncomplicated malaria are associated with their ability to form rosettes and reflected the clinical outcome of the patients. (biomedcentral.com)
  • Pathologists should be aware of rosette formation in osteosarcoma to avoid misdiagnosis as other rosette forming tumors of bone especially PNET/Ewings sarcoma. (who.int)
  • Flexner-Wintersteiner rosette a spoke- and wheel-shaped cell formation seen in retinoblastoma and certain other ophthalmic tumors. (thefreedictionary.com)
  • Rosette formation has been studied in various developmental contexts, such as in the zebrafish lateral line primordium, the vertebrate pancreas, the Drosophila epithelium and retina, as well as in the adult neural stem cell niche. (biologists.org)
  • In these brain regions, an invagination of the ependymal lining was observed, resulting in the formation of small spherical fragments of neural tissue (rosettes). (jneurosci.org)
  • Neural rosette formation is a critical morphogenetic process during neural development, whereby neural stem cells are enclosed in rosette niches to equipoise proliferation and differentiation. (biologists.org)
  • How neural rosettes form and provide a regulatory micro-environment remains to be elucidated. (biologists.org)
  • We employed the human embryonic stem cell-based neural rosette system to investigate the structural development and function of neural rosettes. (biologists.org)
  • Our study shows that neural rosette formation consists of five types of morphological change: intercalation, constriction, polarization, elongation and lumen formation. (biologists.org)
  • These, in turn, control the polarizing elements, ZO-1, PARD3 and β-catenin during polarization and lumen production for neural rosette formation. (biologists.org)
  • We further demonstrate that the dismantlement of neural rosettes, mediated by the destruction of cytoskeletal elements, promotes neurogenesis and astrogenesis prematurely, indicating that an intact rosette structure is essential for orderly neural development. (biologists.org)
  • Rosette structures also take part in morphogenesis during neural development. (biologists.org)
  • Gilbert, 2010 ), suggesting the importance of neural rosette structures. (biologists.org)
  • Pluripotent stem cell (PSC)-based neural developmental modeling provides a good system for exploring neural rosette formation. (biologists.org)
  • This study was undertaken to determine how neural rosettes form, which factors are involved, and their potential roles in neural fate decisions using a human PSC-based system. (biologists.org)
  • The process of early neural differentiation in hESCs begins by initiation of primitive neuroectoderm, which is manifested by rosette formation, with consecutive differentiation into neural progenitors and early glial-like cells. (stemcell.com)
  • At approximately E6, these changes consist of invaginations of pieces of the ependymal lining and the formation of neuroepithelial rosettes. (jneurosci.org)
  • The rosettes are composed of central fragments of ependymal lining, surrounded by an inner ventricular layer and an outer mantle layer. (jneurosci.org)
  • Radial glia processes are radially arranged around the ependymal centers of the rosettes. (jneurosci.org)
  • Identifying the presence of perivascular pseudorosettes or true ependymal rosettes is instrumental in the diagnosis. (thefreedictionary.com)
  • For example, the presence of pseudorosettes and ependymal rosettes is consistent with ependymal differentiation. (thefreedictionary.com)
  • arrangement of ependymal cells around a vessel (perivascular pseudorosette) or around a space or channel (transependymal rosette). (thefreedictionary.com)
  • During early differentiation processes, Tbx3 is involved in mesendodermal differentiation, heart development, and limb formation [ 14 ]. (hindawi.com)
  • Sera of children with cerebral disease generally lacked anti-rosette activity, while many sera from children with uncomplicated malaria showed strong anti- rosette activity when tested against the patients' ow parasites. (ox.ac.uk)
  • The results of this study, taken in conjunction with our previous findings, establish a strong association between rosette formation in P. falciparum-infected RBC and cerebral malaria. (ox.ac.uk)
  • In severe falciparum malaria cytoadherence of parasitised red blood cells (PRBCs) to vascular endothelium (causing sequestration) and to uninfected red cells (causing rosette formation) contribute to microcirculatory flow obstruction in vital organs. (ox.ac.uk)
  • Host response in malaria research has primarily focused on protein component and lipids were usually appraised for their role in cell membrane formation or energy storage. (frontiersin.org)
  • The expression of Fc alphaR (CD89) was low compared with that on neutrophils, and experiments with the blocking mAb My43 (CD89) showed no inhibition of rosette formation between eosinophils and IgA-coated beads. (jimmunol.org)
  • These rosettes are polarized, transient epithelial structures that sometimes recapitulate the form of the adult organ. (biologists.org)
  • Recently, it has become apparent that polarized epithelial rosettes are common intermediates that are observed during the organogenesis of multiple organs in diverse species. (biologists.org)
  • The spindle cell subtype may be confused with the spindle cell variant of carcinoid, and epithelial thymomas may exhibit fairly pronounced rosette formation. (cap.org)
  • Generally, rosettes that are formed through the planar polarized mechanism resolve relatively quickly and typically contribute to processes involving tissue elongation. (biologists.org)
  • For example, the resolution of rosettes that are formed during convergent extension (see Glossary, Box 1 ) drives tissue elongation. (biologists.org)
  • Multicellular rosettes form and resolve in a directional fashion that promotes germ-band elongation. (wikipedia.org)
  • The coordinated apical membrane constriction in single Delta D-positive hair cell progenitors and in their neighbouring prospective support cells generates cellular rosettes. (biologists.org)
  • Live imaging reveals that cellular rosettes subsequently separate from each other and give rise to individual neuromasts. (biologists.org)
  • Genetic analysis uncovers an involvement of Lethal giant larvae proteins in the maturation of apical junction belts during cellular rosette formation. (biologists.org)
  • Our findings suggest that apical constriction of cell membranes spatially confines regions of strong cell-cell adhesion and restricts the number of tightly interconnected cells into cellular rosettes, which ensures the correct deposition of neuromasts during morphogenesis of the posterior lateral line organ. (biologists.org)
  • Multicellular rosettes have recently been appreciated as important cellular intermediates that are observed during the formation of diverse organ systems. (biologists.org)
  • Here, we review recent studies of the genetic regulation and cellular transitions involved in rosette formation. (biologists.org)
  • The proper formation of adult organs relies on cellular rearrangements that occur during development. (biologists.org)
  • Thus, an understanding of the signals and cellular events that drive rosette formation will be important for understanding tissue formation and maintenance. (biologists.org)
  • In this Review, we first summarize the processes mediating the cellular rearrangements that lead to rosette formation. (biologists.org)
  • However, the molecular and cellular mechanisms underlying morphogenetic movements during rosette formation remain an open question in developmental biology. (biologists.org)
  • These rosettes are multicellular structures in which five or more cells interface at a central point and their remodeling contributes to the formation of a functional organ. (biologists.org)
  • Despite these differences, the many contexts in which rosettes are formed suggest that they constitute a broadly utilized mechanism during morphogenesis. (biologists.org)
  • A 36- CESA rosette was compatible with most descriptions of the microfibrils in primary cell walls up to the time of the Delmer (1999) review. (plantphysiol.org)
  • Sevuparin disrupts P. falciparum rosette formation in a dose dependent manner and inhibits cytoadherence to endothelial cells. (ox.ac.uk)
  • By contrast, rosettes that are formed through apical constriction can persist for extended periods of time, may or may not resolve, and often remodel to form a functional structure or organ. (biologists.org)
  • Priming with granulocyte-macrophage CSF, IL-4, or IL-5 is required for eosinophils to form rosettes with IgA-beads. (jimmunol.org)
  • In Nicole King's lab at Berkeley, however, by treating them with antibiotics-a ruthless measure to stop the choanoflagellates being overrun by bacteria-researchers found the rosettes would no longer form. (the-scientist.com)
  • Synthesis of 18-chain microfibrils is consistent with a model for cellulose-synthesizing complexes in which three cellulose synthase polypeptides form a particle and six particles form a rosette. (plantphysiol.org)
  • Whereas the intracellular mechanisms that participate in rosette formation are relatively well conserved between species and organ systems, the extracellular cues that regulate rosette formation are diverse. (biologists.org)
  • Next, we discuss the molecular mechanisms responsible for rosette formation in different contexts. (biologists.org)
  • Finally, we compare and contrast the mechanisms driving rosette formation to highlight similarities and differences across organ systems. (biologists.org)
  • This spectacular image shows the Rosette star formation region, which is located about 5,000 light years from Earth. (harvard.edu)
  • Dense cores and star formation in the giant molecular cloud Vela C. (u-strasbg.fr)
  • Low-mass star formation and subclustering in the H II regions RCW 32, 33, and 27 of the Vela Molecular Ridge. (u-strasbg.fr)
  • High-mass star formation possibly triggered by cloud-cloud collision in the H II region RCW 34. (u-strasbg.fr)
  • possible evidence for a cloud-cloud collision triggering O star formation. (u-strasbg.fr)
  • Spatial distribution of star formation related to ionized regions throughout the inner Galactic plane. (u-strasbg.fr)
  • Extreme star formation: high-z, starburst, gal. (uni-koeln.de)
  • IMSEAR at SEARO: Rosette formation in osteosarcoma. (who.int)
  • Taken together, adhesion to C32 melanoma cells starts prior to that of rosette formation, immunoglobulin binding, or serum-induced agglutination. (ajtmh.org)
  • I. An increased subpopulation of cells in RA detected with Facb rosettes. (springer.com)
  • Bone marrow aspirate, imprint and trephine biopsy showed rosettes of the abnormal lymphoid cells . (bvsalud.org)
  • and 9% (3 of 33) in Dukes' D. Of 206 control samples, three (1.5%) contained cells in BM that formed rosettes with the MOC31 beads. (aacrjournals.org)
  • The rosette test was the most sensitive, consistently detecting fetal cells at concentrations of 0.25 percent or greater. (biomedsearch.com)
  • The allorosette formation of rat spleen cells and T cells, isolated by an Ig-anti-Ig column, was examined. (springer.com)
  • Brondz BD, Kotomina IF, Jeliseyeva LS, Egorova SG, Snegirova AE (1973) Relationship between killer and rosette-forming cells reactive to H-2 antigens. (springer.com)
  • Elliott BE, Haskill JS, Axelrad MA (1973) Thymus-derived rosettes are not "helper" cells. (springer.com)
  • Formation of rosettes with infiltrating natural killer cells, neutrophils, and macrophages was required for the subsequent destruction of cancer cells through rapid cytolysis. (pnas.org)
  • AIH is prominent of portal/ portal fibrosis and Rosette formation, interface inflammation and infiltration of plasma cells. (alliedacademies.org)
  • The cells yielding higher frequency of protoplast formation also gave protoplast with a high degree of colony-forming ability. (reverso.net)
  • In addition to the simple neighbor exchange, higher-ordered rosette formations have been observed in which five or more cells meet at a vertex. (wikipedia.org)
  • Avoid use of heparin, as most rosettes are heparin-sensitive. (bio-protocol.org)
  • We also compared the flower head production between isolated rosettes and rosettes within clones. (scielo.br)
  • The flower head production was higher in rosettes within clones than in isolated ones. (scielo.br)
  • The clones presented a rosette or a small group of rosettes that concentrated the sexual reproduction. (scielo.br)
  • The associations of papillary carcinoma thyroid , hyperglobulinemia and retroperitoneal fibrosis in this case which explain the histogenesis of rosette formation are discussed. (bvsalud.org)
  • Conclusion: DIAIH is different from AIH in liver function tests, levels of immunoglobulin and pathological characteristic such as interface hepatitis, plasma cell infiltration, portal fibrosis and Rosette formation. (alliedacademies.org)
  • 39C1.5 inhibits sheep erythrocyte rosette formation. (beckman.com)
  • These studies have revealed that the cytoskeletal rearrangements responsible for rosette formation appear to be conserved. (biologists.org)
  • ICAM-1 and CD36 are the main host cell receptors, while PfEMP1-DBLα is a major parasite ligand, which can contribute to rosette formation. (biomedcentral.com)
  • La figure représente le test de formation des colonies de la moelle osseuse. (reverso.net)
  • With Reverso you can find the French translation, definition or synonym for test de formation des colonies and thousands of other words. (reverso.net)
  • Choanoflagellates, single-celled flagellates, have been thought of as a model for multicellularity since the 1800s because they live either as individuals or in colonies shaped like rosettes. (the-scientist.com)
  • However, it is important to note that the functional significance of rosettes is tightly linked to both their formation and resolution. (biologists.org)
  • Rosette organization is one such process occurring in various tissues and organs in a variety of organisms, which might reflect its functional significance or selective advantage. (biologists.org)
  • The combination of the X-ray and optical data lead astronomers to believe that stars are still forming in the central cluster of the Rosette, known as NGC 2237. (harvard.edu)
  • Astronomers study elephant trunks because of their unique formation process and use 2-D and 3-D simulations to try to understand how this phenomenon occurs. (wikipedia.org)
  • Additionally, Tbx3 is highly expressed in definite endoderm progenitors and together with Jmjd3 and Eomes promotes the formation of the endoderm [ 15 ]. (hindawi.com)
  • RCW 36 in the Vela Molecular Ridge: Evidence for high-mass star-cluster formation triggered by cloud-cloud collision. (u-strasbg.fr)
  • In our opinion rosettes in an osteosarcoma should be documented both from a differential diagnostic point of view and also to elucidate definitive prognostic implications. (who.int)
  • Posttranscriptional silencing seems mainly to involve the formation of aberrant RNA molecules and is occasionally, but not necessarily, accompanied by DNA methylation. (pnas.org)
  • Rosette formation in non Hodgkin's lymphoma in the bone marrow--a case report. (bvsalud.org)
  • Cytochalasin D, an inhibitor of actin polymerization, leads to abnormal Spitzenk rper formation and loss of cell polarity. (bireme.br)
  • In land plants (embryophytes) and charophycean green algae, each microfibril emerges from a rosette of six particles on the plasma membrane, so it is reasonable to assume that a microfibril contains a multiple of six (1→4)-β-glucan chains, but the value of that multiple remains uncertain. (plantphysiol.org)
  • in aged rats, we even found rosette-like structure formation. (frontiersin.org)
  • Some sections may also show trabecular growth and rosette formation. (cap.org)
  • The 3′UTR of At UBP1b is sufficient to repress reporter protein expression in tissues expressing miR854 or miR855 (rosette leaves and flowers, respectively) but not where both miRNAs are absent (cauline leaves). (plantcell.org)
  • Research reveals that viral infection can trigger chronic inflammation of the endothelium, or lining of the walls of arteries, and lead to the formation of artery-clogging plaque (atherosclerosis). (nutritionreview.org)
  • Both rosette types are transient, although their persistence varies. (biologists.org)