• However, it can be challenging to differentiate when they are connected with wounded tissue, opposed to when they instruct tissue-specific progenitor cells responsible for the redevelopment of damaged tissue. (techscience.com)
  • Human endothelial progenitor cells (hEPCs) are adult stem cells, located in the bone marrow and peripheral blood. (intechopen.com)
  • Different phenotypes and subtypes of endothelial progenitor cells (EPCs), such as early and late EPCs, have been described according to their functionality. (intechopen.com)
  • 1 Unique MSC-specific markers have not yet been identified, and MSCs constitute a heterogeneous cell population, including both multipotent (stem) cells and progenitor cells and might even contain pluripotent cell fractions. (bmj.com)
  • Though not defined as a hematopoietic organ, the lung houses many resident hematopoietic cells, aids in platelet biogenesis, and is a reservoir for hematopoietic stem and progenitor cells (HSPCs). (bu.edu)
  • Neurons that arise in the adult nervous system originate from neural stem cells and neural progenitor cells. (elifesciences.org)
  • Neural stem cells can also give rise to neural progenitor cells, which proliferate rapidly during their short lives and then 'differentiate' into neurons or glia. (elifesciences.org)
  • Consequently, neural stem and progenitor cells have usually been studied retrospectively, based on their ability to form colonies in laboratory cell cultures. (elifesciences.org)
  • A region of the brain called the subventricular zone contains both neural stem cells and neural progenitor cells, and is one of only two regions of the brain where neural stem cells are found in adult mammals. (elifesciences.org)
  • At first, the mesenchymal stem cell was thought to be the primary component of this undifferentiated cell type, however it is now evident that within the adipose extracellular matrix are also adipocytic precursors (known as progenitor cells) adherent to adipocytes, and in close approximation to a variety of additional undifferentiated multipotent and pluripotent cells, including pericytes and endothelial cells, all thought to play important roles in mesenchymal-stromal derived tissue regeneration. (journalofprolotherapy.com)
  • Study the interaction of tumor cells with other normal cell types, e.g. immune cells, mesenchymal stem/progenitor cells. (preferred-cell-systems.com)
  • CC-ASC generated epithelial cells with undifferentiated morphology in all culture methods, among which CC-ASC in 3D culture supported the highest cell doubling (cells doubled 9.0 times compared to cells doubled 4.9 times in control) while maintained the percentage of putative limbal stem/progenitor cells compared to the control. (drcremers.com)
  • Mei H, González S, Nakatsu MN, Baclagon ER, Chen FV, Deng SX (2017) Human adipose-derived stem cells support the growth of limbal stem/progenitor cells. (drcremers.com)
  • Mesenchymal stem cells (MSCs) also known as mesenchymal stromal cells or medicinal signaling cells are multipotent stromal cells that can differentiate into a variety of cell types, including osteoblasts (bone cells), chondrocytes (cartilage cells), myocytes (muscle cells) and adipocytes (fat cells which give rise to marrow adipose tissue). (wikipedia.org)
  • While the terms mesenchymal stem cell (MSC) and marrow stromal cell have been used interchangeably for many years, neither term is sufficiently descriptive: Mesenchyme is embryonic connective tissue that is derived from the mesoderm and that differentiates into hematopoietic and connective tissue, whereas MSCs do not differentiate into hematopoietic cells. (wikipedia.org)
  • Mesenchymal stem cells (MSCs), a term first coined by Arnold I. Caplan in 1991, are characterized morphologically by a small cell body with a few cell processes that are long and thin. (wikipedia.org)
  • However, MSCs are found in much higher concentration in the Wharton's jelly compared to cord blood, which is a rich source of hematopoietic stem cells. (wikipedia.org)
  • These cells have several advantages over bone-marrow-derived MSCs. (wikipedia.org)
  • MSCs have been seen to even differentiate into neuron-like cells, but doubt remains about whether the MSC-derived neurons are functional. (wikipedia.org)
  • Mesenchymal stem cells (MSCs) are the most commonly used cells in tissue engineering and regenerative medicine. (frontiersin.org)
  • MSCs can promote host tissue repair through several different mechanisms including donor cell engraftment, release of cell signaling factors, and the transfer of healthy organelles to the host. (frontiersin.org)
  • Employing in vitro cell culture of inherited mitochondrial disease and an in vivo animal experimental model of low-grade inflammation (high fat feeding), we show human-derived MSCs to alter mitochondrial function. (frontiersin.org)
  • Mesenchymal stem cells (MSCs) are multipotent cells usually isolated from bone marrow, endometrium, adipose tissues, skin, and dental pulp. (techscience.com)
  • MSCs played a crucial role in regenerative therapy and have been introduced as an interdisciplinary field between cell biology and material science. (techscience.com)
  • Recently, MSCs have been widely explored for their application in regenerative medicine and COVID-19 treatment. (techscience.com)
  • In this article, we briefly address topics related to the therapeutic potential of MSCs as an advanced approach in the field of regenerative medicine and various perspectives. (techscience.com)
  • Mesenchymal stem cells (MSCs) are multipotent stromal cells capable of self-renewal and exhibit multilineage differentiation properties. (techscience.com)
  • The Mesenchymal and Tissue Stem Cell Committee, which belongs to the International Society for Cellular Therapy, stated that plastic-adherent properties are the minimum criteria for determining MSCs. (techscience.com)
  • In vitro cell culture and animal studies have demonstrated that mesenchymal stromal cells (MSCs) have the capacity to modify immune responses and to enhance tissue repair. (bmj.com)
  • Mesenchymal stromal cells (MSCs) are cells of non-haematopoietic origin, with the capacity to differentiate into multiple lineages of the mesenchyme, that is, chondrocytes, osteoblasts and adipocytes. (bmj.com)
  • iii) absence of several haematopoietic and endothelial markers (ie, CD45, CD34, CD11b or CD14, CD79 or CD19 and HLA-DR in human MSCs). (bmj.com)
  • 2 MSCs were first described in the bone marrow where they constitute a small fraction of cells (0.001%-0.01%) that closely interact with haematopoietic cells to support haematopoiesis and skeletal homeostasis. (bmj.com)
  • On infusion, culture-expanded MSCs regulate inflammatory and immune responses and tissue repair. (bmj.com)
  • Following early observations that MSCs inhibit T-cell proliferation, 9 MSCs were found to interact with the majority of innate and adaptive immune cells. (bmj.com)
  • 11 12 MSCs furthermore contribute to tissue homeostasis through anti-apoptotic and regenerative properties. (bmj.com)
  • Thus, these properties of MSCs make these cells potentially ideal candidates for tissue technology. (stemcellsgroup.com)
  • This migration property of MSCs is important in regenerative medicine, where various injection routes are utilized depending on the damaged tissue or organ. (stemcellsgroup.com)
  • Arnold Caplan (1991), coined the term "mesenchymal stem cell and stated that the cells as multipotent mesenchymal cell populations which can differentiate into several tissue types, and demonstrated roles for MSCs in the regeneration of bone, cartilage or ligaments in animal and clinical studies. (stemcellsgroup.com)
  • However, the first clinical trials of MSCs were completed in 1995 when a group of 15 patients were injected with cultured MSCs to test the safety of the treatment. (stemcellsgroup.com)
  • Mesenchymal stem/stromal cells (MSCs) can be isolated from neonatal tissues, most of which are discarded after birth, including placental tissues, fetal membranes, umbilical cord, and amniotic fluid. (stemcellsgroup.com)
  • Thus, neonatal tissues are easily available and they have biological advantages in comparison to adult sources that make them a useful source for stem cells including MSCs. (stemcellsgroup.com)
  • Mesenchymal stem cells (MSCs) are a promising cell type for cell-based therapies. (bvsalud.org)
  • Amniotic epithelial cells (AECs) and mesenchymal stem cells (MSCs) were isolated from placenta (a source of neonatal stem cells) by explant culture method. (bvsalud.org)
  • Results indicated that placenta-derived AECs and MSCs were efficiently differentiated into skin cells, that is, keratinocytes and fibroblasts, respectively, as indicated by morphological changes, immunostaining, and polymerase chain reaction analysis. (bvsalud.org)
  • Mesenchymal stem cells (MSCs) are an attractive candidate for autologous cell therapy, but their ability to repair damaged myocardium is severely compromised with advanced age. (bvsalud.org)
  • Mesenchymal stem cells (MSCs) from bone marrow play a critical role in osteochondral repair. (hindawi.com)
  • Mesenchymal stem cells (MSCs) play a key role in articular cartilage repair. (hindawi.com)
  • MSCs have multilineage differentiation potential, allowing them to differentiate, for example, into chondrocytes and osteoblasts, the key cells from the two tissues that constitute the osteochondral unit. (hindawi.com)
  • In the orthopaedic field, additional application of a bone marrow aspirate (BMA) to the procedure of marrow stimulation has been recently studied, since the bone marrow itself is both a source of MSCs, providing a cell population capable of chondrogenesis and of various growth factors stimulating cartilage repair [ 7 - 10 ]. (hindawi.com)
  • In contrast to the cost- and labor-intensive cultivation and propagation of cells such as MSCs or articular chondrocytes, the clinical use of "minimally processed" autologous BMA that can be prepared in the operation room as a single-step procedure appears straightforward. (hindawi.com)
  • There are many studies involving autologous therapies and some allogenic therapies, based on the recovery of mobilized bone marrow cells, including mesenchymal stem cells (MSCs) and adipose derived stem cells that also include the stromal or adherent cell type that has an MSC phenotype. (biomedcentral.com)
  • This includes bone and cartilage repair, cell types into which MSCs readily differentiate, and immune conditions such as graft versus host disease and autoimmune conditions that utilize the MSC's immune suppressive properties. (biomedcentral.com)
  • The use of patient's own bone marrow aspirates, hematopoietic stem cells and MSCs, for heart muscle tissue repair can be puzzling because these cells do not normally contribute to the cardiac lineage types that are desired. (biomedcentral.com)
  • Mesenchymal stem cells (MSCs) are under investigation to treat autoimmune and degenerative disorders due to their immunomodulatory and regenerative properties. (biomedcentral.com)
  • Autologous bone marrow MSCs (BMMSCs), isolated, cultured, and expanded, were administered by intrathecal (IT) injection in the cisterna magna intravenously (IV) and by intra-arterial (IA) injection in the right carotid artery. (biomedcentral.com)
  • Because of their multi/pluripotency and immunosuppressive properties, mesenchymal stem/stromal cells (MSCs) are important tools for treating immune disorders and for tissue repair. (biomedcentral.com)
  • Producing cells according to Good Manufacturing Practices (GMPs) is a global challenge for the production of all cells for use in humans, specifically mesenchymal stem/stroma cells (MSCs), one of the most promising tools in cellular therapy and regenerative medicine. (biomedcentral.com)
  • MSCs with a mesodermic origin were first described by Alexander Friedenstein and colleagues in the 1960s and 1970s[ 1 ] as non-hematopoietic bone marrow (BM) cells that adhered to plastic and that could develop into colonies with a fibroblastic appearance. (biomedcentral.com)
  • These main characteristics apply to cultured BM MSCs, but some differences might appear to be related to the tissue of origin. (biomedcentral.com)
  • Cells referred to as MSCs originating from various tissues are now used in clinical trials. (biomedcentral.com)
  • Due to their immunomodulatory properties, mesenchymal stem cells (MSCs) have come into focus as a potential therapeutic concept. (biomedcentral.com)
  • The aim of this study was to investigate the influence of MSCs on the phenotype, cytokine profile, and functionality of naive and non-naive CD4 + T-cells from healthy donors (HD) and patients with autoimmune arthritis under Th17-cytokine polarizing conditions in an explorative way using a transwell system prohibiting any cell-cell-contact. (biomedcentral.com)
  • Magnetically isolated naive and non-naive CD4 + T-cells were stimulated under Th17-polarizing proinflammatory cytokine conditions in presence and absence of bone marrow derived mesenchymal stromal cells (MSCs). (biomedcentral.com)
  • In isolated naive CD4 + T-cells from HD and patients, MSCs suppressed the differentiation of naive towards an effector phenotype while memory and naive cells showed higher percentages in culture with MSCs. (biomedcentral.com)
  • In patients, MSCs significantly decreased the proportion of IL-9 and IL-17 producing effector T-cells. (biomedcentral.com)
  • The results of the study indicate significant immunomodulatory properties of MSCs, as under Th17-polarizing conditions MSCs are still able to control T-cell differentiation and proinflammatory cytokine production in both HD and patients with autoimmune arthritis. (biomedcentral.com)
  • Mesenchymal stem cells (MSCs) are multipotent adult stem (or stromal) cells with the capacity of self-renewal and differentiation potential towards several mesodermal linages such as osteogenic, chondrogenic and adipogenic differentiation (more citations) [ 1 ]. (biomedcentral.com)
  • A shift from Th1 to Th2 cells demonstrated by an increase in the levels of IL-4 has been observed upon treatment with MSCs [ 8 ]. (biomedcentral.com)
  • Mesenchymal stem/stromal cells (MSCs) are increasingly used as an intravenously applied cellular therapeutic. (stemcellslab.net)
  • Pivotal studies by the group of Horwitz in children with osteogenesis imperfecta, an inherited enzyme deficiency of collagen synthesis by mesenchymal cells in bone, opened the field for intravenous use of MSCs. (stemcellslab.net)
  • These studies used various ways to label culture-expanded MSCs, and to track them in different tissues over time. (stemcellslab.net)
  • The tissue source of the MSCs was in most cases not decisive, and cells from various tissue sources were explored. (stemcellslab.net)
  • and signals from the injected cells were found early after administration of the MSCs at the highest frequencies in the lungs, followed by liver and spleen. (stemcellslab.net)
  • Senescence of mesenchymal stem cells (MSCs) and the related functional decline of osteogenesis have emerged as the critical pathogenesis of osteoporosis in aging. (thno.org)
  • They include endothelial cells, fibroblasts, and keratinocytes. (frontiersin.org)
  • These cells can be differentiated into mature endothelial cells, which are involved in processes of angiogenesis and vessel regeneration. (intechopen.com)
  • Thus, it has been shown that early EPCs release cytokines that promote tissue regeneration and neovasculogenesis, whereas late EPC and endothelial colony forming cells (ECFCs) contribute to the formation of blood vessels and stimulate tube formation. (intechopen.com)
  • A comparative analysis of single-cell RNA sequencing data collected from three HUCMSCs and two human umbilical vein endothelial cell (HUVEC) controls identified eight common cell clusters, all of which indicated regenerative potential specific for HUCMSCs. (nature.com)
  • Hemogenic endothelial cells (HECs) are specialized cells that undergo endothelial-to-hematopoietic transition (EHT) to give rise to the earliest precursors of hematopoietic progenitors that will eventually sustain hematopoiesis throughout the lifetime of an organism. (bu.edu)
  • Explant cultures of murine and human fetal lungs display adherent endothelial cells transitioning into floating hematopoietic cells, accompanied by the gradual loss of an endothelial signature. (bu.edu)
  • Loss of corneal endothelial cells (CECs) bears disastrous consequences for the patient, including corneal clouding and blindness. (lww.com)
  • 1 If the number of corneal endothelial cells (CECs) falls below a certain threshold because of traumatic injury, disease, or normal aging processes, functionality of the CE is decreased, and the cornea swells and becomes milky, leading to eventual vision loss. (lww.com)
  • Primary Human Saphenous Vein Endothelial Cells isolated from saphenous veins from single donors. (promocell.com)
  • Request our GMP compliant cell culture media for endothelial cells. (promocell.com)
  • Low-serum cell culture medium for endothelial cells from large blood vessels. (promocell.com)
  • Another statement showed the preadipocyte- and endothelial cell-derived stromal-derived element-1 (CXCL12), mediated early infiltration of CD4+ T lymphocytes in obesity, which preceded the increase of macrophages in adipose cells of mice on HFD (101). (exposed-skin-care.net)
  • The aim of this study is to investigate the role of activated ovarian endothelial cells in early in-vitro follicular development. (biomedcentral.com)
  • After a constitutive activation of the Akt pathway was initiated, early follicles (50-150 um) were mechanically isolated from 8-day-old mice and co-cultured with these activated ovarian endothelial cells (AOEC) ( n = 32), gel ( n = 24) or within matrigel ( n = 27) in serum free media for 14 days. (biomedcentral.com)
  • Endothelial cells (ECs) may elaborate essential "angiocrine factors" involved in organ regeneration. (biomedcentral.com)
  • These bone marrow stem cells do not contribute to the formation of blood cells, and so do not express the hematopoietic stem cell marker CD34. (wikipedia.org)
  • a) The cells should exhibits plastic adherence (b) The cell should possess specific set of cell surface markers, i.e. cluster of differentiation (CD) 73, D90, CD105 and lack expression of CD14, CD34, CD45 and human leucocyte antigen-DR (HLA-DR). (c) The cells should have the ability to differentiate in vitro into adipocyte, chondrocyte and osteoblast. (stemcellsgroup.com)
  • Stromal cells are connective tissue cells that form the supportive structure in which the functional cells of the tissue reside. (wikipedia.org)
  • The term encompasses multipotent cells derived from other non-marrow tissues, such as placenta, umbilical cord blood, adipose tissue, adult muscle, corneal stroma, or the dental pulp of deciduous (baby) teeth. (wikipedia.org)
  • Enhanced expression of IL-6, IGF-1, TGF-β, and VEGF has also been observed in LC treated BMSCc+ groups, suggested the cardiac differentiation of BMSCc+, and can be utilized in tissue engineering for cardiac cell therapy. (techscience.com)
  • Materials and method: The pulp tissue, obtained from wisdom teeth, was placed in a 6-well plate containing proper culture medium, and stored at 37 °C and 5% CO2 for cell proliferation and plastic adherence. (bvsalud.org)
  • The isolated cells may be considered stem cells, based on the current criteria for their characterization, such as plastic adherence, expression of certain markers, and the absence of others, as well as multi-differentiation potential, which showed to be promising for the application in tissue regeneration. (bvsalud.org)
  • The first source of Mesenchymal stem cells was in the bone marrow and considered to be the gold standard for clinical research, although various other sources have being discovered which include: Adipose tissue, Dental pulp, Mobilised Peripheral blood, Amniotic fluid, Joint synovium, synovial fluid, Endosteum, Periosteum, Menstrual blood and birth-derived tissues. (stemcellsgroup.com)
  • According to the European Medicines Agency (EMA) BM-derived CD133 + stem cells intended for the regeneration of human ischemic heart tissue are classified as an advanced therapy medicinal product (ATMP) [ 17 ]. (biomedcentral.com)
  • Stem cells have attracted much interest in tissue engineering as a cell source due to their ability to proliferate in an undifferentiated state for prolonged time and capability of differentiating to different cell types after induction. (wjgnet.com)
  • Scaffolds play an important role in tissue engineering as a substrate that can mimic the native extracellular matrix and the properties of scaffolds have been shown to affect the cell behavior such as the cell attachment, proliferation and differentiation. (wjgnet.com)
  • Cell culture or tissue culture is the process by which cells are grown under controlled conditions, generally outside of their natural environment. (wikipedia.org)
  • The term "tissue culture" was coined by American pathologist Montrose Thomas Burrows . (wikipedia.org)
  • After the cells of interest have been isolated from living tissue , they can subsequently be maintained under carefully controlled conditions. (wikipedia.org)
  • Tissue culture commonly refers to the culture of animal cells and tissues, with the more specific term plant tissue culture being used for plants. (wikipedia.org)
  • In practice, the term "cell culture" now refers to the culturing of cells derived from multicellular eukaryotes , especially animal cells, in contrast with other types of culture that also grow cells, such as plant tissue culture , fungal culture, and microbiological culture (of microbes ). (wikipedia.org)
  • The historical development and methods of cell culture are closely interrelated to those of tissue culture and organ culture . (wikipedia.org)
  • The laboratory technique of maintaining live cell lines (a population of cells descended from a single cell and containing the same genetic makeup) separated from their original tissue source became more robust in the middle 20th century. (wikipedia.org)
  • [6] In 1885 Wilhelm Roux removed a section of the medullary plate of an embryonic chicken and maintained it in a warm saline solution for several days, establishing the basic principle of tissue culture. (wikipedia.org)
  • Gottlieb Haberlandt first pointed out the possibilities of the culture of isolated tissues, plant tissue culture . (wikipedia.org)
  • [12] He suggested that the potentialities of individual cells via tissue culture as well as that the reciprocal influences of tissues on one another could be determined by this method. (wikipedia.org)
  • Since Haberlandt's original assertions, methods for tissue and cell culture have been realized, leading to significant discoveries in biology and medicine. (wikipedia.org)
  • A focus is on the steps of mobilization of cells from the subchondral bone and repair tissue formation, including adherence of the bone marrow clot to the subchondral bone. (hindawi.com)
  • Unlike some other tissues, it has not been possible to identify or purify neural stem cells directly from the tissue. (elifesciences.org)
  • Worldwide, 50,000 hematopoietic stem cell transplant (HSCT) procedures are undertaken annually to replace a person's blood-forming cells - hematopoietic stem cells (HSCs) - to treat blood disorders and cancers, yet two-thirds of patients who need HSCT lack matched donor tissue. (utoronto.ca)
  • These early trials are showing roles for stem cells both in replacing damaged tissue as well as in providing extracellular factors that can promote endogenous cellular salvage and replenishment. (biomedcentral.com)
  • indicated that ATMs colocalized with T cells in lymphoid clusters within adipose tissue and may act as APCs, which express high levels of MHCII and also costimulatory molecules and process and present antigens to induce CD4+ T-cell proliferation and activation in adipose tissue of obese mice (29, 68, 105). (exposed-skin-care.net)
  • However, its role in aging-related adipose tissue CD4+ T cell activation remains to be investigated. (exposed-skin-care.net)
  • CD8+ T Cell Activation Compared to CD4+ T cells, CD8+ T cells show a greater increase in adipose tissue in obesity and in aging (31, 43, 106). (exposed-skin-care.net)
  • Similar to CD4+ T cells, CD8+ T cells exhibit effector memory or effector phenotypes expressing elevated levels of IFN- in obese adipose tissue (31, 44). (exposed-skin-care.net)
  • The mechanism for CD8+ T cell activation in adipose tissue is not fully understood. (exposed-skin-care.net)
  • showed that adipose tissue from obese mice induced proliferation of splenic CD8+ T cells, indicating a CD8+ T cell-activating environment in obese adipose tissue (31). (exposed-skin-care.net)
  • Indeed, CD8+ T cells from mouse adipose tissue respond to cytokines and become activated and proliferate under stimulation of IL-12 and IL-18, which are mainly produced by APCs and are elevated in obese adipose tissue (44). (exposed-skin-care.net)
  • Proteomics is a powerful approach to study the whole set of proteins expressed in an organism, organ, tissue or cell resulting in valuable information on physiological or pathological state of a biological system. (oaji.net)
  • An organoid is a 3D organization of cells that can recapitulate some of the structure and function of native tissue. (mdpi.com)
  • One explanation for deficient repair is when undifferentiated adult stem repair cells are inadequate in number or cannot be stimulated within the damaged tissue site. (journalofprolotherapy.com)
  • With improved understanding of tissue healing and regeneration, stem cell Prolotherapy is gaining significant clinical importance and potential. (journalofprolotherapy.com)
  • IL-9 and Th9 cells are overexpressed in synovial tissue while proportion of Th9 cells are increased in peripheral blood from RA patients [ 28 ]. (biomedcentral.com)
  • 1. Activation of adipose tissue and related mesenchymal stem cells: promotion of anti-inflammatory properties through SOX2 transcription factor and HuR RNA-binding protein modulation. (neurogelenmarche-usa.org)
  • 1999). Recent studies have shown that the potentiality of tissue regeneration can be enhanced using adipose derived stem cells (hADSCs) (see Gimble et al. (neurogelenmarche-usa.org)
  • 2011). Stem cell frequency appears to be significantly higher in adipose tissue than in other tissues such as bone marrow (Bieback et al. (neurogelenmarche-usa.org)
  • We have recently reported that mechanical manipulation of human adipose tissue without modification of tissue composition, structure and histology, that was totally comparable to that of the original source (see Experimental procedure for details), increased significantly the number of stromal cells bearing the expression of beta-tubulin III. (neurogelenmarche-usa.org)
  • We have suspected that mechanical forces may be of key relevance in adult tissue plasticity as it occurs during embryogenesis, tissue remodeling and mitotic and motile behavior of cells (Vogel et al, 2006). (neurogelenmarche-usa.org)
  • Stem cells are known to work via a variety of methods to heal tissue depending on where the stem cells come from and into which tissue it is being placed. (drcremers.com)
  • Here is a general list of all the Ways Stem Cells heal tissues or create new tissue. (drcremers.com)
  • 1. Stem cells have long been known to have the ability to differentiate (ie become/transform) into "good/normal" tissue. (drcremers.com)
  • Embryonic stem cells have been fraught with difficulties in coaxing them into "good/normal" tissue and there are major ethical issues. (drcremers.com)
  • Bone cell' Bone cells', which are found within the bone tissue, are responsible for the make-up of the skeleton of vertebrates. (patsnap.com)
  • They are made up of different bone cells: there is the compact tissue which is the hard outer part of the bone, the cancellous tissue which is all the spongy tissue inside of the compact tissue, and the subchondral tissue which is the smooth tissue at the end of each bone. (patsnap.com)
  • The application of hydrogels as a matrix for 3-dimensional cell cultures has become an indispensable tool in tissue engineering, biotechnology and biomedical research due to the improved functionality and viability of the in vitro biological system. (heraldopenaccess.us)
  • The main advantage of hydrogels for microfluidic cell cultures, however, is their mimicry of extracellular matrix structures including adequate porosity for cellular organization, biocompatibility, and representative stiffness, all key parameters that promote native-like tissue function. (heraldopenaccess.us)
  • They are sometimes referred to as bone marrow stromal stem cells. (wikipedia.org)
  • CD133 + stem cells were purified from patient-derived sternal bone marrow using the recently developed automatic CliniMACS Prodigy® BM-133 System (Prodigy). (biomedcentral.com)
  • The additional application of a bone marrow aspirate (BMA) to the procedure of marrow stimulation is thought to enhance cartilage repair as it may provide both an additional cell population capable of chondrogenesis and a source of growth factors stimulating cartilage repair. (hindawi.com)
  • Source material for hematopoietic (bone marrow) transplantation is in great demand as at least 20,000 allogeneic transplants are performed each year. (utoronto.ca)
  • While numerous teams continue to refine and expand the role of bone marrow and cord blood stem cells for their vanguard uses in blood and immune disorders, many others are looking to expand the uses of the various types of stem cells found in bone marrow and cord blood, in particular mesenchymal stem cells, to uses beyond those that could be corrected by replacing cells in their own lineage. (biomedcentral.com)
  • A significant proportion of clinical studies that are underway involve bone marrow and cord blood stem cells for blood and immune disorders [ 3 ] and cancers. (biomedcentral.com)
  • They could differentiate into bone, cartilage, and a hematopoietic microenvironment. (biomedcentral.com)
  • In the 1970s, Friedenstein and colleagues [1] first reported that locally applied culture-expanded populations of bone marrow stroma-derived fibroblastic cells remained at their injection sites under the kidney capsule, where an ectopic hematopoiesis was initiated. (stemcellslab.net)
  • This concept started from the observation that bone marrow transplantation can provide stromal cells able to synthesize intact collagen type I, replacing deficient patient cell function and ameliorating disease symptoms [5]. (stemcellslab.net)
  • These adult stem cells, such as from fat (adipose derived) or bone marrow, have the ability to transform into different cells. (drcremers.com)
  • Bone cells all work together inside of the bones to help keep up the skeletal system. (patsnap.com)
  • The bone cells do many things for the skeletal system such as the development of new bones, the maintenance of bones, and the regulation of minerals in the body. (patsnap.com)
  • Types There are four main categories of bone cells which include: lining cells, which protect the boneOursler, Merry J., and Teresita Bellido Bellido. (patsnap.com)
  • while the subchondral bone region enhances the environment for cells which migrate into that region's macrostructure and which differentiate into osteoblasts. (patsnap.com)
  • We prospectively identified, and isolated by flow cytometry, adult mouse lateral ventricle subventricular zone (SVZ) NICs as Glast mid EGFR high PlexinB2 high CD24 −/low O4/PSA-NCAM −/low Ter119/CD45 − (GEPCOT) cells. (elifesciences.org)
  • Over the last years, dentistry has been exploring the potential application of stem cells from different origins in the regeneration of oral tissues that were lost or damaged by disease or trauma 1 . (bvsalud.org)
  • hEPCs have been used for cell-based therapies due to their capacity to contribute in the re-endothelialization of injured blood vessels and neovascularization in ischemic tissues. (intechopen.com)
  • low cell number in adult tissues, restricted expansion and differentiation capacity, and donor-related heterogeneity limit their use. (bvsalud.org)
  • In obese humans, adipocyte-secreted CCL20 may contribute to the deposition of Compact disc4+ helper and Compact disc8+ cytotoxic T lymphocytes within adipose tissues, possibly via connections with CCR6 which was upregulated on T cells in obese adipose tissues (100). (exposed-skin-care.net)
  • However, the main element substances that mediate T cell infiltration into adipose tissues in maturing remain to become discovered. (exposed-skin-care.net)
  • Activation of Typical T Cells in Adipose Tissues Compact disc4+ Purpureaside C T Cell Activation TCRs recognize the current presence of a particular antigen by binding to brief peptide sequences in the antigen that's shown on APCs. (exposed-skin-care.net)
  • further defined that mostly huge adipocytes from obese adipose tissues exhibited an increased expression degree of MHCII substances and acted as APCs to activate Compact disc4+ T cells to secrete IFN- (103). (exposed-skin-care.net)
  • Recently, emerging evidences have demonstrated that Nanog is expressed in a variety of cancer cell lines and tissues, and is associated with aggressive tumors [10, 11]. (researchsquare.com)
  • Recognition of the vast number of undifferentiated cells associated with the stromal vascular fraction has resulted in extensive research demonstrating the heterogeneity of such cells, and their ability to participate in production of all mesodermal-derived tissues. (journalofprolotherapy.com)
  • These elaborate signals promoted by ECs have been termed "angiocrine factors" and have been shown to be crucial for the maintenance of organ-specific tissues and tumor cells [ 12 ]. (biomedcentral.com)
  • Therefore, we propose that damage to and subsequent release of mtDNA elicits a protective signalling response that enhances nDNA repair in cells and tissues, suggesting that mtDNA is a genotoxic stress sentinel. (regenerativemedicine.net)
  • Uniquely cryopreserved and freeze the cells using a U.S patented, GMP and clinically graded cryopreserved solutions in order to exponentially minimize or potentially eliminate the elements that would damage the cell viability and reduce the cell quantity after thaw the cells before transplantation. (newcyte.com)
  • In addition, the regenerative potential of purified stem cells was assessed 3 weeks after transplantation in immunodeficient mice which had been subjected to experimental myocardial infarction. (biomedcentral.com)
  • A skin substitute was developed by mixing hNSCs-derived skin cells (hNSCs-SCs) in plasma for transplantation in a rat model of severe burn injury. (bvsalud.org)
  • In these studies, however, transplanted cells were followed, if at all, at the site of transplantation, and biodistribution was not an issue. (stemcellslab.net)
  • The most efficient method to expand limbal stem cells (LSCs) in vitro for clinical transplantation is to culture single LSCs directly on growth-arrested mouse fibroblast 3T3 cells. (drcremers.com)
  • Dr. Ta also has extensive clinical experience in the treatment of ocular graft-versus host disease following hematopoietic stem cell transplantation. (stanford.edu)
  • Conclusion: Our results suggest that the explant method - or cell proliferation method - is suitable for the isolation and culture of stem cells from dental pulp of permanent teeth. (bvsalud.org)
  • Likewise, they have the ability to activate the angiogenesis, proliferation, migration, and differentiation of the main cell types involved in skin regeneration. (frontiersin.org)
  • Similarly, they are characterized by an extensive capacity for self-renewal, proliferation, potential to differentiate into multiple lineages and their immune-modulatory role on various cells. (stemcellsgroup.com)
  • Furthermore, we demonstrated that these automatically isolated cells bear proliferation and differentiation capacities comparable to manually isolated cells in vitro. (biomedcentral.com)
  • We found that the depletion of Nanog inhibited proliferation and promoted apoptosis in EpCAM + CD44 + HCT-116 cells. (researchsquare.com)
  • The number of live cells and the proliferation rate were monitored by MTT assay. (biomedcentral.com)
  • Using these methods, we aim to evaluate the toxicity and effects of the BAs on the viability and proliferation of the cultured cells. (biomedcentral.com)
  • Since neurosphere-forming cells can self-renew and differentiate into neurons and glia, the ability of cells to form neurospheres has generally been taken as evidence that they are stem cells. (elifesciences.org)
  • Because human mesenchymal stem cells are known to be sensitive to their mechanical environments, we investigated the mechanotransductive potential of Descemet membrane-like microtopography (DLT) to differentiate human mesenchymal stem cells into CEC-like cells. (lww.com)
  • Previous studies have shown that it is closely linked with cancer stem cells (CSCs), which have self-renewal potential and the capacity to differentiate into diverse populations. (researchsquare.com)
  • However, one of the bottlenecks in the stem cell therapy is that stem cells tend to differentiate into other types of cells during culture in vitro. (biomedcentral.com)
  • Through them, the cells modify their microenvironment and the behavior of neighboring cells. (frontiersin.org)
  • In 1907 the zoologist Ross Granville Harrison demonstrated the growth of frog embryonic cells that would give rise to nerve cells in a medium of clotted lymph . (wikipedia.org)
  • In this review, we discuss the rationale for MSC-based cell therapy in COPD, the main findings from in vitro and in vivo preclinical COPD model studies, clinical trials in patients with COPD and directions for further research. (bmj.com)
  • Recently, several clinical trials showed an increased left ventricular ejection fraction (LVEF) and an improved regional perfusion following intramyocardial application of cluster of differentiation (CD) 133 + stem cells [ 5 - 9 ]. (biomedcentral.com)
  • Yet, CD133 + stem cells for clinical use are purified using manual or semi-automatic devices based on the conventional magnetic cell sorting (MACS®) technique. (biomedcentral.com)
  • Tumor and lymphoid compartments sparsely expressed immunosuppressive targets commonly investigated in clinical trials, such as the programmed cell death protein-1/programmed death ligand-1 axis. (bu.edu)
  • With the Centre for Commercialization of Regenerative Medicine (CCRM), this project will test top candidates for batch-fed pre-clinical HSC expansion. (utoronto.ca)
  • In recent years, clinical trials with stem cells have taken the emerging field in many new directions. (biomedcentral.com)
  • The rapid advance of stem cell clinical trials for a broad spectrum of conditions warrants an update of the review by Trounson (2009) [ 1 ]. (biomedcentral.com)
  • There has been a rapid surge in clinical trials involving stem cell therapies over the last two to three years and those trials are establishing the clinical pathways for an emergent new medicine. (biomedcentral.com)
  • Placenta-derived stem cells are being considered for similar uses and are in Phase III clinical trial for critical limb ischemia by Israel's Pluristem Therapeutics. (biomedcentral.com)
  • We have chosen to concentrate on the emerging therapeutics that broadly involves a wide range of cell types in clinical trials registered on the National Institutes of Health's clinical trials web site. (biomedcentral.com)
  • ar4280-S8.PDF (1.7M) GUID:?3B4F6A60-6238-4C1B-845B-025DC69E0C96 Abstract Introduction The attainment of remission has become an important end point for clinical trials in juvenile idiopathic arthritis (JIA), although we do not yet have a full understanding of what remission is at the cell and molecular level. (tech-strategy.org)
  • Stem cells have been extensively explored for a variety of regenerative medical applications and they play an important role in clinical treatment of many diseases. (biomedcentral.com)
  • The standard method to culture LSCs on 3T3 feeder cells that have been used in clinical study is cultivating single LSC directly on top of the growth-arrested 3T3 feeder cells [ 14 ]. (drcremers.com)
  • CD133 + stem cells represent a promising subpopulation for innovative cell-based therapies in cardiovascular regeneration. (biomedcentral.com)
  • Recent studies indicate that stem cell-based regenerative therapies can restore severe damaged skin both structurally and functionally. (bvsalud.org)
  • The methods proposed are cutting-edge and no other team in the world has this combination of technologies, approaches and expertise to make advances in hematopoietic cell therapies. (utoronto.ca)
  • However, the worldwide shortages of corneal donor material generate a strong demand for personalized stem cell-based alternative therapies. (lww.com)
  • The standard test to confirm multipotency is differentiation of the cells into osteoblasts, adipocytes and chondrocytes as well as myocytes. (wikipedia.org)
  • studies indicated that RANTES is Purpureaside C an adipokine that can be produced by adipocytes and takes on an important part in T cell migration, suggesting a potential part of the RANTES/CCR5 axis in adipose T cell build up in obesity (24). (exposed-skin-care.net)
  • Indeed, the principal adipocytes isolated from obese mice could induce antigen-specific Compact disc4+ T cell activation (58). (exposed-skin-care.net)
  • Taken together, one important mechanism for obese adipose CD4+ T cell activation may be mediated through MHCII expressed on ATMs and adipocytes. (exposed-skin-care.net)
  • Results: The isolated cells showed high expression of CD44 (98.8%), CD73 (100%), and CD90 (97.2%), and moderate expression of STRO-1 (18.4%) and ALDH1 (16.2%), by flow cytometry. (bvsalud.org)
  • Adult stem cells remain of particular interest as therapeutic agents for cardiac regeneration in ischemic heart disease [ 1 - 4 ]. (biomedcentral.com)
  • The regeneration potential of these cells is mainly based on their direct contribution to neovascularization and on their secretion of various paracrine factors activating pro-angiogenic mechanisms [ 13 - 16 ]. (biomedcentral.com)
  • The properties of HUCMSCs were validated by untargeted label-free quantitation of the cell and CM proteome, suggesting increased activity of regeneration, autophagy and anti-inflammation pathways and mitochondrial function. (nature.com)
  • The Center for Regenerative Medicine (CReM) is a joint effort between Boston University and Boston Medical Center that brings together nine principal investigators addressing various aspects of developmental biology, stem cells, regeneration and injury, cell lineage specification and disease modeling with a major focus on induced Pluripotent Stem Cells or iPSCs. (bu.edu)
  • Objective: To establish cultures of cells from the pulp of permanent teeth by the explant method assessing parameters usually presented by stem cells, such as the expression of certain markers and the differentiation ability into osteogenic, adipogenic, and chondrogenic lineages. (bvsalud.org)
  • Cells were tested for the expression of surface markers and for ALDH1 enzyme activity, by flow cytometry. (bvsalud.org)
  • Pre-GEPCOT cells could not form neurospheres but expressed the stem cell markers Slc1a3-CreER T , GFAP-CreER T2 , Sox2 CreERT2 , and Gli1 CreERT2 and were long-lived in vivo. (elifesciences.org)
  • term pre-GEPCOT cells (based on an acronym of the markers used to isolate the cells), were long-lived and quiescent, but they lacked the ability to form colonies in culture. (elifesciences.org)
  • The group plans to identify better markers to track and purify key cell intermediates as well as uncover key genes/pathways that lead to HSC development. (utoronto.ca)
  • In addition, we found that in the presence of LIF, MDLS could replace feeder cells to maintain the undifferentiated state of OG2-mES cells (Oct4-GFP reporter gene mouse embryonic stem cell line), and the MDLS-expanded OG2-mES cells showed an elevated expression levels of pluripotency markers in vitro. (biomedcentral.com)
  • Therefore, research on exosomes produced by MSC has been intensified for use in cell-free regenerative medicine. (frontiersin.org)
  • Research in The Center for Regenerative Medicine is made possible by the generous financial support of many organizations and individuals. (bu.edu)
  • Regenerative medicine is an emerging field that combines the knowledge of many disciplines with the aim of curing impaired function in the body. (neurogelenmarche-usa.org)
  • This work was supported by National Eye Institute grants (5P30EY000331 and 1R01EY021797), by a California Institute for Regenerative Medicine Early Translational Award (TR2-01768), and an unrestricted grant from Research to Prevent Blindness. (drcremers.com)
  • Learn how stem cells are disrupting medicine and transforming lives today by reading Dr. Riordan's book about stem cell therapy today. (neilriordan.com)
  • As many as 1 in 100 cells collected during amniocentesis are pluripotent mesenchymal stem cells. (wikipedia.org)
  • At the same time, the first three trials using cells derived from pluripotent cells have begun. (biomedcentral.com)
  • However, all developmental processes originate from pluripotent precursor cell types. (amegroups.org)
  • This team, which brings together expertise in stem cell biology, cell biology, developmental signalling pathways, and genetic screens, aims at improving methods to achieve generation of HSC. (utoronto.ca)
  • Methods: To investigate whether Nanog plays a crucial role in maintaining the stemness of colorectal CSCs (CCSCs), RNA interference was used to downregulate Nanog expression in the CRC stem cell line, EpCAM + CD44 + HCT-116. (researchsquare.com)
  • To optimize the ASC-supported culture, freshly isolated limbal epithelial cells in the form of single cells (SC-ASC) or cell clusters (CC-ASC) were cultured using three different methods: LSCs seeded directly on feeder cells, a 3-dimensional (3D) culture system and a 3D culture system with fibrin (fibrin 3D). (drcremers.com)
  • In one particular embodiment, methods for enhancing cellular functions on a surface of a medical device implant are disclosed which generally comprise providing a medical device implant comprising a plurality of nanofibers (e.g., nanowires) thereon and exposing the medical device implant to cells such as osteoblasts. (patsnap.com)
  • In addition, cells were assessed for multi-differentiation potential. (bvsalud.org)
  • Similarly, the cells showed differentiation ability into all three lineages of cells tested. (bvsalud.org)
  • Ghasemi-Mobarakeh L, Prabhakaran MP, Tian L, Shamirzaei-Jeshvaghani E, Dehghani L, Ramakrishna S. Structural properties of scaffolds: Crucial parameters towards stem cells differentiation. (wjgnet.com)
  • Malignant GEP-NET cells expressed genes and regulons associated with normal, gastrointestinal endocrine cell differentiation, and fate determination stages. (bu.edu)
  • However, the limited amount of stem cells and their tendency to undergo spontaneous differentiation upon extended propagation in vitro restrict their practical application. (biomedcentral.com)
  • Furthermore, MDLS could promote teratoma formation and enhanced differentiation potential of P19 cells in vivo. (biomedcentral.com)
  • The production of terminally differentiated cells from such cells, therefore, requires successive changes of cell fates, meaning that genes relevant for the next stage of differentiation must be switched on and genes not relevant anymore must be switched off. (amegroups.org)
  • The development of the hematopoietic system has long served as model to understand how changes in gene regulatory networks drive the differentiation of the various blood cell types. (amegroups.org)
  • In the presence of TGF-β, IL-9 may induce differentiation of naive CD4 + T-cells towards Th17 cells, while IL-9 also affects thymus-derived natural Tregs (nTregs) and enhances their suppressive function in vitro [ 26 ]. (biomedcentral.com)
  • This chapter provides an overview of the key role of hEPC in promoting angiogenesis and their potential use for cell therapy. (intechopen.com)
  • Here we report application of human umbilical cord mesenchymal stem cell (HUCMSC)-derived therapy for pulmonary arterial hypertension (PAH). (nature.com)
  • Development of viable autologous cell therapy for treatment of heart failure in the elderly requires the need to address MSC ageing. (bvsalud.org)
  • For all eight dogs, the owners considered euthanasia but accepted cell therapy as a last possibility. (biomedcentral.com)
  • KPT-185 and KPT-276) in NSCLC cells and to ideally offer book understanding into these medicines for potential focus SCH 442416 IC50 on therapy of NSCLC. (cancerhugs.com)
  • MSC co-culture with skin fibroblasts from mitochondrial disease patients rescued aberrant mitochondrial morphology from a fission state to a more fused appearance indicating an effect of MSC co-culture on host cell mitochondrial network formation. (frontiersin.org)
  • The cells were first named colony-forming unit-fibroblasts (CFU-Fs). (biomedcentral.com)
  • In cultured primary fibroblasts and cancer cells, the chemotherapeutic drug doxorubicin causes mtDNA damage and release, which leads to cGAS STING dependent ISG activation. (regenerativemedicine.net)
  • Artificial reproduction of Descemet membrane with respect to topography and similar stiffness offers a potential innovative way to bioengineer a functional CEC monolayer from autologous stem cells. (lww.com)
  • 1, 2 Recently, Prolotherapists have begun to utilize the potential of autologous adipose (fat)-derived stem/stromal cells (AD-SC) within non-manipulated fat graft scaffolding, combined with high-density PRP concentrates (HD-PRP) to provide a potent biological therapeutic combination. (journalofprolotherapy.com)
  • 2 Despite having high metabolic activity, human CECs (hCECs) do not proliferate in vivo because these cells arrest in the G1 phase of the cell cycle. (lww.com)
  • Despite recent achievements of microfluidic 2D cell culture systems [9], they still do not address the fact that in vivo cells coexist in 3D communities that are influenced by spatial orientation of cells and cell-to-cell contact within the extracellular matrix [10]. (heraldopenaccess.us)
  • In addition, mtDNA stress in TFAM-deficient mouse melanoma cells produces tumours that are more resistant to doxorubicin in vivo. (regenerativemedicine.net)
  • The requirements for the successful culture of organoids in vitro differ significantly from those of traditional monolayer cell cultures. (mdpi.com)
  • It has been repeatedly demonstrated that the presence of a 3D matrix promotes many biologically relevant functions otherwise not observed in 2D monolayer cell cultures [11]. (heraldopenaccess.us)
  • A cell can be classified as an MSC if it shows plastic adherent properties under normal culture conditions and has a fibroblast-like morphology. (wikipedia.org)
  • Nanog is a unique homeobox transcription factor required to maintain the self-renewal and pluripotency of embryonic stem cells (ESCs). (researchsquare.com)
  • Octamer-binding transcription factor-4 (Oct4), a transcription factor belongs to the POU transcription factor family Class V, is fundamental for maintaining self-renewal ability and pluripotency of stem cells. (biomedcentral.com)
  • Colony formation assay, sphere-forming ability assay, alkaline phosphatase (AP) activity assay and teratoma-formation assay were used to assess the role of modaline sulfate (MDLS) in promoting self-renewal and reinforcing pluripotency of P19 cells. (biomedcentral.com)
  • These findings demonstrated, for the first time, that MDLS could maintain self-renewal and pluripotency of stem cells. (biomedcentral.com)
  • Therefore, finding a way to effectively maintain the pluripotency of stem cells cultured in vitro is important for the application of stem cells. (biomedcentral.com)
  • Given the ease of extraction and pluripotency of this cell population, we propose ERC as a novel alternative to current stem cells sources. (neilriordan.com)
  • The cells do not have the capacity to reconstitute an entire organ. (wikipedia.org)
  • The entire manufacturing process, the examination of cell number and viability of the final CP as well as the depletion of non-target cells were part of the validation process, which was performed in compliance with EU guidelines for GMP. (biomedcentral.com)
  • Allogeneic Umbilical Cord Blood Stem cell. (newcyte.com)
  • Despite advances in using umbilical cord blood, donor material remains restricted by limited stem cells and the lack of ethnic diversity to provide sufficiently matched material. (utoronto.ca)
  • The cells secrete extracellular vesicles (EV) that may have an endosomal origin, or from evaginations of the plasma membrane. (frontiersin.org)
  • 2. Stem cells secrete growth factors which can help heal damage cells. (drcremers.com)
  • The biological activity of automatically isolated CD133 + cells was evaluated and compared to manually isolated CD133 + cells via functional assays as well as immunofluorescence microscopy. (biomedcentral.com)
  • Immunofluorescence, RT-PCR, and western blotting were used to measure expression changes of stem-related genes and activation of related signaling pathways. (biomedcentral.com)
  • It is expressed in ESCs, embryonic germ (EG) cells and embryonic carcinoma (EC) cells and essential for early embryonic development [ 14 , 15 ]. (biomedcentral.com)
  • Bleomycin causes an increase in oxidative stress which has been shown to induce apoptosis in cancer cells. (bcl2signaling.com)
  • These protein consist of growth government bodies and suppressors of cell apoptosis, nuclear localization of which can be needed for their correct function [4]. (cancerhugs.com)
  • These inhibitors are selectively inhibitors of nuclear move (SINE), and possess been demonstrated to end up being effective for dealing with specific types of malignancies, including pancreatic tumor, severe myeloid leukemia, mantle cell lymphoma, causing in significant development apoptosis and inhibition of tumour cells with no serious toxicity [20]C[22]. (cancerhugs.com)
  • Preferred Cell Systems™ is the exclusive manufacturer and supplier of all reagents and in vitro assays originally produced by HemoGenix. (preferred-cell-systems.com)
  • More recent research applications include microchips for genomics, proteomics and cell-based assays. (heraldopenaccess.us)
  • In addition, the invasive ability of EpCAM + CD44 + HCT-116 cells was markedly restricted when Nanog was silenced by small interfering RNA. (researchsquare.com)
  • Different approaches to evaluate the future of biomaterials and stem cell properties have been developed. (techscience.com)
  • Unique properties of placenta-derived stem cells make them superlative candidates for the development of "off-the-shelf" artificial skin substitutes for future use. (bvsalud.org)
  • The identification of undifferentiated pre-GEPCOT and GEPCOT cells will make it possible to directly study the properties of these cells inside the mouse brain, and to isolate live cells to test how they function. (elifesciences.org)
  • The generation of HSCs has been a long-standing goal of stem cell biologists working in the field of developmental hematopoiesis. (utoronto.ca)