The outermost extra-embryonic membrane surrounding the developing embryo. In REPTILES and BIRDS, it adheres to the shell and allows exchange of gases between the egg and its environment. In MAMMALS, the chorion evolves into the fetal contribution of the PLACENTA.
Proteins which are found in eggs (OVA) from any species.
The thin layers of tissue that surround the developing embryo. There are four extra-embryonic membranes commonly found in VERTEBRATES, such as REPTILES; BIRDS; and MAMMALS. They are the YOLK SAC, the ALLANTOIS, the AMNION, and the CHORION. These membranes provide protection and means to transport nutrients and wastes.
The innermost membranous sac that surrounds and protects the developing embryo which is bathed in the AMNIOTIC FLUID. Amnion cells are secretory EPITHELIAL CELLS and contribute to the amniotic fluid.
A genus of silkworm MOTHS in the family Bombycidae of the order LEPIDOPTERA. The family contains a single species, Bombyx mori from the Greek for silkworm + mulberry tree (on which it feeds). A native of Asia, it is sometimes reared in this country. It has long been raised for its SILK and after centuries of domestication it probably does not exist in nature. It is used extensively in experimental GENETICS. (From Borror et al., An Introduction to the Study of Insects, 4th ed, p519)
An extra-embryonic membranous sac derived from the YOLK SAC of REPTILES; BIRDS; and MAMMALS. It lies between two other extra-embryonic membranes, the AMNION and the CHORION. The allantois serves to store urinary wastes and mediate exchange of gas and nutrients for the developing embryo.
The repetitive uterine contraction during childbirth which is associated with the progressive dilation of the uterine cervix (CERVIX UTERI). Successful labor results in the expulsion of the FETUS and PLACENTA. Obstetric labor can be spontaneous or induced (LABOR, INDUCED).
The plasma membrane of the egg.
A highly vascularized mammalian fetal-maternal organ and major site of transport of oxygen, nutrients, and fetal waste products. It includes a fetal portion (CHORIONIC VILLI) derived from TROPHOBLASTS and a maternal portion (DECIDUA) derived from the uterine ENDOMETRIUM. The placenta produces an array of steroid, protein and peptide hormones (PLACENTAL HORMONES).
A hard or leathery calciferous exterior covering of an egg.
The only genus in the family Oryziinae, order BELONIFORMES. Oryzias are egg-layers; other fish of the same order are livebearers. Oryzias are used extensively in testing carcinogens.
The process of germ cell development in the female from the primordial germ cells through OOGONIA to the mature haploid ova (OVUM).
A mature haploid female germ cell extruded from the OVARY at OVULATION.
Cells lining the outside of the BLASTOCYST. After binding to the ENDOMETRIUM, trophoblasts develop into two distinct layers, an inner layer of mononuclear cytotrophoblasts and an outer layer of continuous multinuclear cytoplasm, the syncytiotrophoblasts, which form the early fetal-maternal interface (PLACENTA).
The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.
The hormone-responsive glandular layer of ENDOMETRIUM that sloughs off at each menstrual flow (decidua menstrualis) or at the termination of pregnancy. During pregnancy, the thickest part of the decidua forms the maternal portion of the PLACENTA, thus named decidua placentalis. The thin portion of the decidua covering the rest of the embryo is the decidua capsularis.
A selective increase in the number of copies of a gene coding for a specific protein without a proportional increase in other genes. It occurs naturally via the excision of a copy of the repeating sequence from the chromosome and its extrachromosomal replication in a plasmid, or via the production of an RNA transcript of the entire repeating sequence of ribosomal RNA followed by the reverse transcription of the molecule to produce an additional copy of the original DNA sequence. Laboratory techniques have been introduced for inducing disproportional replication by unequal crossing over, uptake of DNA from lysed cells, or generation of extrachromosomal sequences from rolling circle replication.
A genus of mosquitoes (CULICIDAE) frequently found in tropical and subtropical regions. YELLOW FEVER and DENGUE are two of the diseases that can be transmitted by species of this genus.
Proteins found in any species of insect.
A plant genus of the family TILIACEAE. Members contain cycloartane saponins and CARDENOLIDES.
Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)
The largest family of snakes, comprising five subfamilies: Colubrinae, Natricinae, Homalopsinae, Lycodontinae, and Xenodontinae. They show a great diversity of eating habits, some eating almost anything, others having a specialized diet. They can be oviparous, ovoviviparous, or viviparous. The majority of North American snakes are colubrines. Among the colubrids are king snakes, water moccasins, water snakes, and garter snakes. Some genera are poisonous. (Goin, Goin, and Zug, Introduction to Herpetology, 3d ed, pp321-29)

Mrj encodes a DnaJ-related co-chaperone that is essential for murine placental development. (1/662)

We have identified a novel gene in a gene trap screen that encodes a protein related to the DnaJ co-chaperone in E. coli. The gene, named Mrj (mammalian relative of DnaJ) was expressed throughout development in both the embryo and placenta. Within the placenta, expression was particularly high in trophoblast giant cells but moderate levels were also observed in trophoblast cells of the chorion at embryonic day 8.5, and later in the labyrinth which arises from the attachment of the chorion to the allantois (a process called chorioallantoic fusion). Insertion of the ROSAbetageo gene trap vector into the Mrj gene created a null allele. Homozygous Mrj mutants died at mid-gestation due to a failure of chorioallantoic fusion at embryonic day 8.5, which precluded formation of the mature placenta. At embryonic day 8.5, the chorion in mutants was morphologically normal and expressed the cell adhesion molecule beta4 integrin that is known to be required for chorioallantoic fusion. However, expression of the chorionic trophoblast-specific transcription factor genes Err2 and Gcm1 was significantly reduced. The mutants showed no abnormal phenotypes in other trophoblast cell types or in the embryo proper. This study indicates a previously unsuspected role for chaperone proteins in placental development and represents the first genetic analysis of DnaJ-related protein function in higher eukaryotes. Based on a survey of EST databases representing different mouse tissues and embryonic stages, there are 40 or more DnaJ-related genes in mammals. In addition to Mrj, at least two of these genes are also expressed in the developing mouse placenta. The specificity of the developmental defect in Mrj mutants suggests that each of these genes may have unique tissue and cellular activities.  (+info)

Canine preprorelaxin: nucleic acid sequence and localization within the canine placenta. (2/662)

Employing uteroplacental tissue at Day 35 of gestation, we determined the nucleic acid sequence of canine preprorelaxin using reverse transcription- and rapid amplification of cDNA ends-polymerase chain reaction. Canine preprorelaxin cDNA consisted of 534 base pairs encoding a protein of 177 amino acids with a signal peptide of 25 amino acids (aa), a B domain of 35 aa, a C domain of 93 aa, and an A domain of 24 aa. The putative receptor binding region in the N'-terminal part of the canine relaxin B domain GRDYVR contained two substitutions from the classical motif (E-->D and L-->Y). Canine preprorelaxin shared highest homology with porcine and equine preprorelaxin. Northern analysis revealed a 1-kilobase transcript present in total RNA of canine uteroplacental tissue but not of kidney tissue. Uteroplacental tissue from two bitches each at Days 30 and 35 of gestation were studied by in situ hybridization to localize relaxin mRNA. Immunohistochemistry for relaxin, cytokeratin, vimentin, and von Willebrand factor was performed on uteroplacental tissue at Day 30 of gestation. The basal cell layer at the core of the chorionic villi was devoid of relaxin mRNA and immunoreactive relaxin or vimentin but was immunopositive for cytokeratin and identified as cytotrophoblast cells. The cell layer surrounding the chorionic villi displayed specific hybridization signals for relaxin mRNA and immunoreactivity for relaxin and cytokeratin but not for vimentin, and was identified as syncytiotrophoblast. Those areas of the chorioallantoic tissue with most intense relaxin immunoreactivity were highly vascularized as demonstrated by immunoreactive von Willebrand factor expressed on vascular endothelium. The uterine glands and nonplacental uterine areas of the canine zonary girdle placenta were devoid of relaxin mRNA and relaxin. We conclude that the syncytiotrophoblast is the source of relaxin in the canine placenta.  (+info)

Formation of mature egg envelope subunit proteins from their precursors (choriogenins) in the fish, Oryzias latipes: loss of partial C-terminal sequences of the choriogenins. (3/662)

The inner layer of egg envelope of the medaka, Oryzias latipes, comprises two major groups of glycoprotein subunits, ZI-1,2 and ZI-3. Their precursor proteins, choriogenin H (Chg H) and choriogenin L (Chg L), respectively, are synthesized in spawning female liver. In the present study, the primary structures of the precursors and the corresponding mature subunits were compared by peptide mapping and amino acid sequencing to find what difference in their molecular structures is relevant to the assembly of the soluble precursors into the insoluble inner layer. The primary structures of the solubilized subunits were mostly identical to those of the respective precursors, but they lacked C-terminal partial sequences that their precursors possessed, namely, ZI-1,2 subunit was shorter than Chg H by 34 amino acid residues and ZI-3 was shorter than Chg L by 27 residues. In addition, a consensus amino acid sequence, Arg-Lys-X-Arg, was found at the putative cleavage sites in the C-terminal region of the precursors. It is conjectured that the truncation of the precursor proteins is prerequisite for formation of mature chorion subunit proteins and their assembly into chorion.  (+info)

CD9 is expressed in extravillous trophoblasts in association with integrin alpha3 and integrin alpha5. (4/662)

The CD9 molecule is a 24-27 kDa cell surface glycoprotein, which may be related to Schwann cell migration and adhesion. In this study, we examined the expression of CD9 in human extravillous trophoblasts, which invade into the endometrium during implantation and placentation. CD9 was detected immunohistochemically on the extravillous trophoblasts in the cell columns of first trimester placentae, but not on villous trophoblasts. In the second and third trimester, CD9 was highly expressed on the extravillous trophoblasts in the basal plate of placentae, and in the chorion laeve in the fetal membrane of term placentae. The molecular mass of CD9 in the chorion laeve was shown to be 27 kDa by Western blotting. The mRNA of CD9 was also detected in the chorion laeve by reverse transcription-polymerase chain reaction (RT-PCR). Proteins were purified from chorion laeve by affinity chromatography with anti-integrin alpha3 and alpha5 monoclonal antibodies and Western blotting, revealed that CD9 was associated with both integrins. These findings indicate that CD9 is a differentiation-related molecule present in the extravillous trophoblasts. Since it is associated with integrin alpha5 which has been proposed to regulate trophoblast invasion, CD9 may be implicated in trophoblast invasion at the feto-maternal interface.  (+info)

Early embryonic lethality in Bmp5;Bmp7 double mutant mice suggests functional redundancy within the 60A subgroup. (5/662)

Members of the BMP family of signaling molecules display a high conservation of structure and function, and multiple BMPs are often coexpressed in a variety of tissues during development. Moreover, distinct BMP ligands are capable of activating common pathways. Here we describe the coexpression of two members of the 60A subfamily of BMPs, Bmp5 and Bmp7, at a number of different sites in the embryo from gastrulation onwards. Previous studies demonstrate that loss of either Bmp5 or Bmp7 has negligible effects on development, suggesting these molecules functionally compensate for each other at early stages of embryonic development. Here we show this is indeed the case. Thus we find that Bmp5;Bmp7 double mutants die at 10.5 dpc and display striking defects primarily affecting the tissues where these factors are coexpressed. The present analysis also uncovers novel roles for BMP signaling during the development of the allantois, heart, branchial arches, somites and forebrain. Bmp5 and Bmp7 do not appear to be involved in establishing pattern in these tissues, but are instead necessary for the proliferation and maintenance of specific cell populations. These findings are discussed with respect to potential mechanisms underlying cooperative signaling by multiple members of the TGF-beta superfamily.  (+info)

A monoclonal antibody against chorion proteins of the sea bass Dicentrarchus labrax (Linnaeus, 1758): studies of chorion precursors and applicability in immunoassays. (6/662)

The monoclonal antibody DLE7 was obtained against 44- to 50-kDa polypeptides solubilized from the vitelline envelope of the Mediterranean sea bass Dicentrarchus labrax. In Western blot analysis of chorion lysates it recognized cross-reactive bands at 44 kDa, 48 kDa, and 110 kDa. Previous affinity blotting with concanavalin-A showed that most of solubilized bands were glycosylated. Enzymatic deglycosylation of chorion proteins followed by Western blot analysis with DLE7 showed that the 48-kDa and 110-kDa antigens were differentially affected by endoglycosidase-F treatment. When DLE7 was employed in immunofluorescence analysis, isolated chorions and ovarian cryosections stained intensely. Positivity was also observed in liver cryosections of spawning females but not in liver of males and nonspawning females. To study the origin and delivery of chorion proteins, DLE7 was used in Western blot analysis of liver homogenates and blood serum of spawning females. Cross-reacting bands were detected in liver (90 kDa) and serum (180 kDa, 50 kDa). DLE7 was also used for the first time to set up an indirect ELISA assay to detect egg antigens in the blood of egg-producing females, raising the possibility of using DLE7 as a female-specific marker of spawning for sea bass.  (+info)

Tissue plasminogen activator and its receptor in the human amnion, chorion, and decidua at preterm and term. (7/662)

The plasminogen activator system consists of two proteins: tissue plasminogen activator (tPA) and urokinase plasminogen activator (uPA), which act upon their specific receptors to generate plasmin from plasminogen located on the cell surface. Plasmin then acts directly and indirectly to degrade the components of the extracellular matrix (ECM). This process is likely to be important in the normal turnover of the ECM of fetal membranes and in its premature weakening in preterm premature rupture of the fetal membranes. Quantitative Northern analysis and in situ hybridization have shown that the decidua expresses mRNA for tPA. However, the immunolocalized tPA protein was most strongly associated with the amnion and chorion, as was its receptor annexin II, suggesting that the amnion and chorion are the targets for decidual tPA. At term, decidual tPA expression was unaffected by labor, and the tPA receptor was elevated both before and after labor. At preterm, the converse was found: decidual tPA expression was significantly (p < 0. 05) up-regulated by labor, but the tPA receptor was not. The results suggest that the generation of plasmin at term would be controlled by an increased concentration of the tPA receptor in the amnion and chorion, whereas at preterm a pathological increase in plasmin would be generated by an overexpression of tPA, initiated by labor.  (+info)

Expression of matrix metalloproteinases during murine chorioallantoic placenta maturation. (8/662)

A large body of experimental evidence supports the participation of two groups of extracellular proteases, matrix metalloproteinases (MMPs), and plasminogen activators/plasmin, in tissue remodeling in physiological and pathological invasion. In the late mouse placenta, several tissue remodeling and cell invasion processes take place. Spongiotrophoblast migration into maternal decidua, as well as decidual extracellular matrix remodeling require the coordinated action of extracellular proteolytic enzymes. Via Northern and in situ hybridization, we have analyzed the spatio-temporal expression patterns of members of the MMP family (stromelysin-3, gelatinases A and B), as well as their inhibitors TIMP-1, -2 and -3 in late murine placenta (days 10.5 to 18.5 of gestation). Gelatinase activity in placental extracts was assessed by substrate zymography. Gelatinase A and stromelysin-3 were found to be prominently expressed in decidual tissue; shortly after midpregnancy, the decidual expression patterns of gelatinase A and stromelysin-3 became overlapping with each other, as well as with the expression domain of TIMP-2. On the other hand, gelatinase B transcripts were expressed only by trophoblast giant cells at day 10.5, and were downregulated at later stages. TIMP-1 and TIMP-3 transcripts were detected in decidual periphery at day 10.5, while later the expression was restricted to the endometrial stroma and spongiotrophoblasts, respectively. The areas of stromelysin-3 expression were the same (giant trophoblasts) or adjacent (decidua) to those where urokinase (uPA) transcripts were detected, suggesting a possible cooperation between these proteinases in placental remodeling. We generated mice doubly deficient for stromelysin-3 and uPA, and report here that these mice are viable and fertile. Furthermore, these animals do not manifest obvious placental abnormalities, thereby suggesting the existence of compensatory/redundant mechanisms involving other proteolytic enzymes. Our findings document the participation of MMPs and their inhibitors in the process of late murine placenta maturation, and warrant the characterization of other members of the MMP family, like membrane type-MMPs, in this process.  (+info)

The chorion is the outermost fetal membrane that surrounds the developing conceptus (the embryo or fetus and its supporting structures). It forms early in pregnancy as an extraembryonic structure, meaning it arises from cells that will not become part of the actual body of the developing organism. The chorion plays a crucial role in pregnancy by contributing to the formation of the placenta, which provides nutrients and oxygen to the growing embryo/fetus and removes waste products.

One of the most important functions of the chorion is to produce human chorionic gonadotropin (hCG), a hormone that signals the presence of pregnancy and maintains the corpus luteum, a temporary endocrine structure in the ovary that produces progesterone during early pregnancy. Progesterone is essential for preparing the uterus for implantation and maintaining the pregnancy.

The chorion consists of two layers: an inner cytotrophoblast layer and an outer syncytiotrophoblast layer. The cytotrophoblast layer is made up of individual cells, while the syncytiotrophoblast layer is a multinucleated mass of fused cytotrophoblast cells. These layers interact with the maternal endometrium (the lining of the uterus) to form the placenta and facilitate exchange between the mother and the developing fetus.

In summary, the chorion is a vital extraembryonic structure in pregnancy that contributes to the formation of the placenta, produces hCG, and interacts with the maternal endometrium to support fetal development.

Egg proteins, also known as egg white proteins or ovalbumin, refer to the proteins found in egg whites. There are several different types of proteins found in egg whites, including:

1. Ovalbumin (54%): This is the major protein found in egg whites and is responsible for their white color. It has various functions such as providing nutrition, maintaining the structural integrity of the egg, and protecting the egg from bacteria.
2. Conalbumin (13%): Also known as ovotransferrin, this protein plays a role in the defense against microorganisms by binding to iron and making it unavailable for bacterial growth.
3. Ovomucoid (11%): This protein is resistant to digestion and helps protect the egg from being broken down by enzymes in the digestive tract of predators.
4. Lysozyme (3.5%): This protein has antibacterial properties and helps protect the egg from bacterial infection.
5. Globulins (4%): These are a group of simple proteins found in egg whites that have various functions such as providing nutrition, maintaining the structural integrity of the egg, and protecting the egg from bacteria.
6. Avidin (0.05%): This protein binds to biotin, a vitamin, making it unavailable for use by the body. However, cooking denatures avidin and makes the biotin available again.

Egg proteins are highly nutritious and contain all nine essential amino acids, making them a complete source of protein. They are also low in fat and cholesterol, making them a popular choice for those following a healthy diet.

Extraembryonic membranes are specialized structures that form around the developing embryo in utero and provide vital support and protection during fetal development. There are three main extraembryonic membranes: the amnion, the chorion, and the allantois.

The amnion is the innermost membrane that surrounds the embryo itself, forming a fluid-filled sac known as the amniotic cavity. This sac provides a protective cushion for the developing embryo and helps to regulate its temperature and moisture levels.

The chorion is the outermost of the extraembryonic membranes, and it forms the boundary between the developing fetus and the mother's uterine wall. The chorion contains blood vessels that exchange nutrients and waste products with the mother's circulation, allowing for the growth and development of the fetus.

The allantois is a small membranous sac that arises from the developing fetal gut and eventually becomes part of the umbilical cord. It serves as a reservoir for fetal urine and helps to exchange waste products between the fetal and maternal circulations.

Together, these extraembryonic membranes play a critical role in supporting fetal development and ensuring a healthy pregnancy.

The amnion is the innermost fetal membrane in mammals, forming a sac that contains and protects the developing embryo and later the fetus within the uterus. It is one of the extraembryonic membranes that are derived from the outer cell mass of the blastocyst during early embryonic development. The amnion is filled with fluid (amniotic fluid) that allows for the freedom of movement and protection of the developing fetus.

The primary function of the amnion is to provide a protective environment for the growing fetus, allowing for expansion and preventing physical damage from outside forces. Additionally, the amniotic fluid serves as a medium for the exchange of waste products and nutrients between the fetal membranes and the placenta. The amnion also contributes to the formation of the umbilical cord and plays a role in the initiation of labor during childbirth.

"Bombyx" is a genus name that refers to a group of insects in the family Bombycidae, which are known as silk moths. The most well-known species in this genus is "Bombyx mori," which is the domesticated silkworm used for commercial silk production.

The term "Bombyx" itself does not have a specific medical definition, but it is sometimes used in medical or scientific contexts to refer to this group of insects or their characteristics. For example, researchers might study the effects of Bombyx mori silk on wound healing or tissue regeneration.

It's worth noting that while some species of moths and butterflies can be harmful to human health in certain circumstances (such as by acting as vectors for diseases), the Bombyx genus is not typically considered a medical concern.

The allantois is a fetal membranous structure in mammals, including humans, that arises from the posterior end of the embryonic hindgut during early development. It plays an essential role in the exchange of waste products and nutrients between the developing fetus and the mother's uterus.

The allantois serves as a reservoir for urinary waste produced by the fetal kidneys, which are the primitive metanephros at this stage. As the allantois grows, it extends toward the chorion, another fetal membrane lining the uterine wall. The point where these two structures meet forms the allantoic bud, which eventually develops into the umbilical cord.

In some non-mammalian vertebrates, like birds and reptiles, the allantois plays a significant role in gas exchange and calcium transport for eggshell formation. However, in humans and other mammals, its primary function is to form part of the umbilical cord, which connects the developing fetus to the placenta, allowing for nutrient and waste exchange between the mother and the fetus.

After birth, the remnants of the allantois become a small fibrous structure called the urachus or median umbilical ligament, which extends from the bladder to the umbilicus. This structure usually obliterates during infancy but may persist as a variant anatomical feature in some individuals.

'Labor, Obstetric' refers to the physiological process that occurs during childbirth, leading to the expulsion of the fetus from the uterus. It is divided into three stages:

1. The first stage begins with the onset of regular contractions and cervical dilation and effacement (thinning and shortening) until full dilation is reached (approximately 10 cm). This stage can last from hours to days, particularly in nulliparous women (those who have not given birth before).
2. The second stage starts with complete cervical dilation and ends with the delivery of the baby. During this stage, the mother experiences strong contractions that help push the fetus down the birth canal. This stage typically lasts from 20 minutes to two hours but can take longer in some cases.
3. The third stage involves the delivery of the placenta (afterbirth) and membranes, which usually occurs within 15-30 minutes after the baby's birth. However, it can sometimes take up to an hour for the placenta to be expelled completely.

Obstetric labor is a complex process that requires careful monitoring and management by healthcare professionals to ensure the safety and well-being of both the mother and the baby.

The vitelline membrane is a thin, transparent, flexible, and protective membrane that surrounds the yolk in bird, reptile, and some insect eggs. It provides nutrition and physical protection to the developing embryo during incubation. In medical terms, it is not directly relevant as it does not have a counterpart or equivalent structure in mammalian embryology.

The placenta is an organ that develops in the uterus during pregnancy and provides oxygen and nutrients to the growing baby through the umbilical cord. It also removes waste products from the baby's blood. The placenta attaches to the wall of the uterus, and the baby's side of the placenta contains many tiny blood vessels that connect to the baby's circulatory system. This allows for the exchange of oxygen, nutrients, and waste between the mother's and baby's blood. After the baby is born, the placenta is usually expelled from the uterus in a process called afterbirth.

I am not aware of a specific medical definition for the term "egg shell." Generally, in a medical context, an "eggshell skull" is a legal doctrine used to describe a situation where a defendant's negligent or reckless conduct causes harm to someone with a preexisting condition that makes them more susceptible to injury than an average person. The term comes from the idea that even a relatively minor blow could cause serious injury to someone with an "eggshell skull," just as dropping an egg on a hard surface would cause it to break, even though the same action might not harm a normal human skull.

However, if you are referring to a medical condition or issue related to actual eggshells, such as ingesting them or using them in a medical procedure, I would need more context to provide an accurate definition or explanation.

"Oryzias" is not a medical term, but a genus name in the family Adrianichthyidae, which includes various species of small fish commonly known as "ricefishes" or "medaka." These fish are often used in scientific research, particularly in the fields of genetics and developmental biology. They are not associated with human diseases or medical conditions.

Oogenesis is the biological process of formation and maturation of female gametes, or ova or egg cells, in the ovary. It begins during fetal development and continues throughout a woman's reproductive years. The process involves the division and differentiation of a germ cell (oogonium) into an immature ovum (oocyte), which then undergoes meiotic division to form a mature ovum capable of being fertilized by sperm.

The main steps in oogenesis include:

1. Multiplication phase: The oogonia divide mitotically to increase their number.
2. Growth phase: One of the oogonia becomes primary oocyte and starts to grow, accumulating nutrients and organelles required for future development.
3. First meiotic division: The primary oocyte undergoes an incomplete first meiotic division, resulting in two haploid cells - a secondary oocyte and a smaller cell called the first polar body. This division is arrested in prophase I until puberty.
4. Second meiotic division: At ovulation or just before fertilization, the secondary oocyte completes the second meiotic division, producing another small cell, the second polar body, and a mature ovum (egg) with 23 chromosomes.
5. Fertilization: The mature ovum can be fertilized by a sperm, restoring the normal diploid number of chromosomes in the resulting zygote.

Oogenesis is a complex and highly regulated process that involves various hormonal signals and cellular interactions to ensure proper development and maturation of female gametes for successful reproduction.

An ovum is the female reproductive cell, or gamete, produced in the ovaries. It is also known as an egg cell and is released from the ovary during ovulation. When fertilized by a sperm, it becomes a zygote, which can develop into a fetus. The ovum contains half the genetic material necessary to create a new individual.

Trophoblasts are specialized cells that make up the outer layer of a blastocyst, which is a hollow ball of cells that forms in the earliest stages of embryonic development. In humans, this process occurs about 5-6 days after fertilization. The blastocyst consists of an inner cell mass (which will eventually become the embryo) and an outer layer of trophoblasts.

Trophoblasts play a crucial role in implantation, which is the process by which the blastocyst attaches to and invades the lining of the uterus. Once implanted, the trophoblasts differentiate into two main layers: the cytotrophoblasts (which are closer to the inner cell mass) and the syncytiotrophoblasts (which form a multinucleated layer that is in direct contact with the maternal tissues).

The cytotrophoblasts proliferate and fuse to form the syncytiotrophoblasts, which have several important functions. They secrete enzymes that help to degrade and remodel the extracellular matrix of the uterine lining, allowing the blastocyst to implant more deeply. They also form a barrier between the maternal and fetal tissues, helping to protect the developing embryo from the mother's immune system.

Additionally, trophoblasts are responsible for the formation of the placenta, which provides nutrients and oxygen to the developing fetus and removes waste products. The syncytiotrophoblasts in particular play a key role in this process by secreting hormones such as human chorionic gonadotropin (hCG), which helps to maintain pregnancy, and by forming blood vessels that allow for the exchange of nutrients and waste between the mother and fetus.

Abnormalities in trophoblast development or function can lead to a variety of pregnancy-related complications, including preeclampsia, intrauterine growth restriction, and gestational trophoblastic diseases such as hydatidiform moles and choriocarcinomas.

Pregnancy is a physiological state or condition where a fertilized egg (zygote) successfully implants and grows in the uterus of a woman, leading to the development of an embryo and finally a fetus. This process typically spans approximately 40 weeks, divided into three trimesters, and culminates in childbirth. Throughout this period, numerous hormonal and physical changes occur to support the growing offspring, including uterine enlargement, breast development, and various maternal adaptations to ensure the fetus's optimal growth and well-being.

The decidua is a specialized type of tissue that lines the uterus during pregnancy. It forms after the implantation of a fertilized egg (embryo) into the uterine lining, and it plays an important role in supporting the growth and development of the embryo and fetus.

The decidua is composed of several layers, including the decidual capsularis, which surrounds the embryo, and the decidual parietalis, which lines the rest of the uterus. The tissue is rich in blood vessels and contains a variety of immune cells that help to protect the developing fetus from infection.

During pregnancy, the decidua produces various hormones and growth factors that support the growth of the placenta, which provides nutrients and oxygen to the fetus. After the birth of the baby, the decidua is shed along with the placenta in a process called childbirth or parturition.

It's worth noting that abnormalities in the decidua can contribute to pregnancy complications such as preeclampsia, preterm labor, and miscarriage.

Gene amplification is a process in molecular biology where a specific gene or set of genes are copied multiple times, leading to an increased number of copies of that gene within the genome. This can occur naturally in cells as a response to various stimuli, such as stress or exposure to certain chemicals, but it can also be induced artificially through laboratory techniques for research purposes.

In cancer biology, gene amplification is often associated with tumor development and progression, where the amplified genes can contribute to increased cell growth, survival, and drug resistance. For example, the overamplification of the HER2/neu gene in breast cancer has been linked to more aggressive tumors and poorer patient outcomes.

In diagnostic and research settings, gene amplification techniques like polymerase chain reaction (PCR) are commonly used to detect and analyze specific genes or genetic sequences of interest. These methods allow researchers to quickly and efficiently generate many copies of a particular DNA sequence, facilitating downstream analysis and detection of low-abundance targets.

"Aedes" is a genus of mosquitoes that are known to transmit various diseases, including Zika virus, dengue fever, chikungunya, and yellow fever. These mosquitoes are typically found in tropical and subtropical regions around the world. They are distinguished by their black and white striped legs and thorax. Aedes aegypti is the most common species associated with disease transmission, although other species such as Aedes albopictus can also transmit diseases. It's important to note that only female mosquitoes bite and feed on blood, while males feed solely on nectar and plant juices.

I'm sorry for any confusion, but "Insect Proteins" is not a recognized medical term. However, I can provide some information about insect protein from a nutritional and food science perspective.

Insect proteins refer to the proteins that are obtained from insects. Insects are a rich source of protein, and their protein content varies by species. For example, mealworms and crickets have been found to contain approximately 47-63% and 60-72% protein by dry weight, respectively.

In recent years, insect proteins have gained attention as a potential sustainable source of nutrition due to their high protein content, low environmental impact, and the ability to convert feed into protein more efficiently compared to traditional livestock. Insect proteins can be used in various applications such as food and feed additives, nutritional supplements, and even cosmetics.

However, it's important to note that the use of insect proteins in human food is not widely accepted in many Western countries due to cultural and regulatory barriers. Nonetheless, research and development efforts continue to explore the potential benefits and applications of insect proteins in the global food system.

'Corchorus' is a genus of flowering plants in the family Malvaceae, also known as Jute. It includes several species that are important for their fiber production, such as Corchorus capsularis (white jute) and Corchorus olitorius (tossa jute). These plants are primarily grown in tropical and subtropical regions, particularly in South Asia and Africa. The fibers from the bark of these plants are used to make various products like burlap, hessian cloth, rope, and twine. Additionally, Corchorus species have been used in traditional medicine and as a food source in some cultures.

An encyclopedia is a comprehensive reference work containing articles on various topics, usually arranged in alphabetical order. In the context of medicine, a medical encyclopedia is a collection of articles that provide information about a wide range of medical topics, including diseases and conditions, treatments, tests, procedures, and anatomy and physiology. Medical encyclopedias may be published in print or electronic formats and are often used as a starting point for researching medical topics. They can provide reliable and accurate information on medical subjects, making them useful resources for healthcare professionals, students, and patients alike. Some well-known examples of medical encyclopedias include the Merck Manual and the Stedman's Medical Dictionary.

Colubridae is a family of snakes that includes a large majority of the world's snake species. It is a diverse group, with members ranging from relatively small and harmless species to large and potentially dangerous ones. Some colubrids have evolved specialized adaptations for specific hunting strategies or defense mechanisms.

Colubridae species are found worldwide, except in Antarctica, and they inhabit various environments such as forests, grasslands, deserts, and wetlands. Many colubrids are constrictors, meaning they kill their prey by wrapping their bodies around it and squeezing until the prey can no longer breathe.

It is worth noting that some colubrid species were previously classified under other families such as Natricidae or Dipsadidae, but recent genetic studies have led to a reclassification of these snakes into Colubridae.

Some examples of colubrids include rat snakes, gopher snakes, racers, whip snakes, and tree snakes. The family also includes some well-known species like the king cobra (Ophiophagus hannah) and the black mamba (Dendroaspis polylepis), which are among the longest and most venomous snakes in the world. However, it is important to note that not all colubrids are venomous, and those that are typically pose little threat to humans due to their mild venom or shy nature.

... this is also named the non-placental part of the chorion. As the chorion grows, the chorion laeve comes in contact with the ... This part of the chorion becomes smooth, and is named the chorion laeve (from the Latin word levis, meaning smooth). As it ... Some mollusks also have chorions as part of their eggs. For example fragile octopus eggs have only a chorion as their envelope ... and hence this part is named the chorion frondosum. Thus the placenta develops from the chorion frondosum and the decidua ...
New Chorion PLC, which was formed to take over the IP division, effectively became the new Chorion PLC and was renamed as such ... "Chorion wants to be Mr Quick". The Guardian. UK. 16 December 2003. Retrieved 17 October 2011. "Mr Men join Chorion in £28m deal ... "Chorion , Company Profile by". Licensing.biz. Archived from the original on 5 October 2011. Retrieved 17 October 2011. "Chorion ... "CHORION (IP) LIMITED - Overview (Free company information from Companies House)". "CHORION LIMITED overview - Find and update ...
... is a moth of the family Erebidae. It is found in Venezuela. Beccaloni, G.; Scoble, M.; Kitching, I.; ...
"Famous Five". Chorion.co.uk. Chorion Limited. Archived from the original on 31 May 2008. Retrieved 29 May 2008. Martin, Nicole ... of Chorion Limited, the company that owns the television rights to Enid Blyton's works, told the Press Association "We tried to ...
The chorion provides the fetal contribution to the formation of the placenta. 2. A tough coat surrounding the eggs of some ... chorion 1. One of four extraembryonic membranes formed during the development of amniotes, arising from trophoblast and ... endoderm endometrium epiblast epiboly estrous cycle Fallopian tubes false amnion See chorion. fate map A diagram that shows ... protoblast protostome reproductive biology secondary spermatocyte semen serosa See chorion. Sertoli cell somatic cell nuclear ...
"Chorion - SEO and Marketing Tips for Businesses". chorion.co.uk. "Discovery Kids: Gaspard and Lisa Characters". Archived from ... The series was made as a co-production between Chorion and animation company Impossible TV. Gaspard and Lisa engage in various ...
"Chorion grabs the Booker prize". BBC News. 3 June 1998. "Agatha Christie Estate Acquired By U.S.-Based Acorn Media". Penske ... In June 1998, Agatha Christie's stakeholding was sold to Chorion for £10 million, who themselves sold it on in February 2012 to ...
Sweney, Mark (March 7, 2012). "Chorion sells rights to Noddy". The Guardian. Archived from the original on December 28, 2013. ... Arrant, Chris (March 19, 2012). "Classic Media Acquires "Olivia" Rights from Chorion". Cartoon Brew. Archived from the original ...
On March 7, 2012, Classic Media bought the Noddy brand from Chorion and later bought the Olivia brand from them on March 19. On ... Sweney, Mark (March 7, 2012). "Chorion sells rights to Noddy". The Guardian. Archived from the original on December 28, 2013. ... Arrant, Chris (March 19, 2012). "Classic Media Acquires "Olivia" Rights from Chorion". Cartoon Brew. Archived from the original ...
The chorion is shiny and smooth. In certain species like Epierus or Platylomalus it can look pale brown and be leathery in ...
Moody, Annemarie (27 April 2009). "Chorion Takes Noddy on an International Adventure". Animation World Network. Retrieved 25 ...
Olivia is a children's computer-animated comedy television series produced by media company Chorion and based on the late Ian ... In 2012, Classic Media acquired the rights to the show from Chorion. Since then, Classic Media was sold to DreamWorks Animation ... Chris Arrant (19 March 2012). "Classic Media Acquires Olivia Rights from Chorion". Cartoon Brew. Retrieved 10 February 2023. ...
Men characters to the UK entertainment group Chorion, for £28 million. In December 2011, Chorion sold the Mr. Men brand and its ... Subscription or UK public library membership required.) "Mr Men join Chorion in £28m deal". Evening Standard. UK. Archived from ...
"Mr Men join Chorion in £28m deal , News". Thisislondon.co.uk. Archived from the original on 23 June 2011. Retrieved 9 May 2011 ... By the beginning of 2007, Chorion had its series of books licensed to Renegade Animation to produce The Mr. Men Show which ... Men leave Chorion to say Hello, Kitty". Financial Times. 6 December 2011. Retrieved 11 December 2011. Magnocavallo, Fabio (30 ... Men and Little Miss characters from Chorion after the company was forced into administration, so they used the THOIP company to ...
Follicular epithelium produced the chorion and degenerated. Ova is free in the ovary, oviduct or oviducal glands. Female that ...
"Nelvana Acquires Chorion's Interest in Max & Ruby". 29 March 2012. Max and Ruby on Treehouse TV Max & Ruby at IMDb Max and Ruby ... Shortly after Chorion and its division Silver Lining Productions both close their doors when season 5 finished production, ... and continues animating the series for seasons 4 and 5 while Chorion co-produced at the same time); with season 6, Nelvana ... Silver Lining itself was acquired by Chorion). 9 Story Entertainment overtook producing the animation from Nelvana in season 3 ...
The chorion locus in Drosophila follicle cells constitutes a well-established example for spatial and developmental control of ... Calvi BR, Lilly MA, Spradling AC (March 1998). "Cell cycle control of chorion gene amplification". Genes & Development. 12 (5 ... gene amplification at a defined stage during oogenesis and relies on the timely and specific activation of chorion origins, ...
Martínez-Cruzado JC, Swimmer C, Fenerjian MG, Kafatos FC (July 1988). "Evolution of the Autosomal Chorion Locus in Drosophila. ... In developmental biology, choriogenesis is the formation of the chorion, an outer membrane of the placenta that eventually ... and primary structure of a chorion cDNA from the gypsy moth". Developmental Biology. 160 (1): 28-38. doi:10.1006/dbio.1993.1283 ...
... a scyphistoma-a single developing medusa-forms and is now called a chorion. Once the chorion grows into about 2 mm (79 mils) ... Within the chorion capsule, differentiation and formation begins. The inner epithelial wall is directly from the parent tissue ...
... currently chairman of ASOS.com and Chorion Ltd.; a Labour peer; one of very few openly gay Muslim politicians in the world ...
". "Chorion Bilayer - Cellular Development, Function & Anatomy - LifeMap Discovery". discovery.lifemapsc.com. Retrieved 2023-03 ...
... the chorion is externally smooth. The larvae differ in appearance from those of other Coccinellidae in that they are covered ... eggs differ from most other coccinellid eggs in that they have a more definite reticular pattern of sculpting on the chorion; ...
The chorion functions to separate the amnion from the maternal decidua and uterus. The placenta develops from the chorion of ... Initially, the amnion is separated from the chorion by chorionic fluid. The fusion of the amnion and chorion is completed in ... They are the amnion, chorion, allantois, and yolk sac. The amnion and the chorion are the chorioamniotic membranes that make up ... The underlying chorion is fused to the decidua at the maternal-fetal interface. This interaction is vital in controlling the ...
A chorion is the outer membrane around the embryo. In aseptic conditions, the eggs are washed twice for 2.5 minutes each, in ...
In 2012, Chorion sold the Noddy character to ClassicMedia, which in turn was bought out by DreamWorks Animation, leading to ... Produced by Chorion in association with SD Entertainment who did the animation. Noddy in Toyland (2009) - The second Noddy ... A CG animated series, called Noddy in Toyland, was made in 2009 by Chorion and produced by Brown Bag Films in Ireland. This ... Produced by Chorion in association with Brown Bag Films. Noddy, Toyland Detective (2016-2020) - DreamWorks' reimagining of the ...
The formation and structure of the chorion of the egg in hemipteran Rhodnius prolixus. Q. J. Microsc. Sci. 87, 393-438. 1947 ... I. Penetration of the chorion of Rhodnius prolixus Stahl. Bull. Ent. Res. 39, 359-383. 1949 The penetration of insect egg- ...
Bilinski, Szczepan (1983). "Oogenesis in Campodea sp.(Insecta, Diplura): Chorion formation and the ultrastructure of follicle ...
Bilinski, Szczepan (1983). "Oogenesis in Campodea sp.(Insecta, Diplura): Chorion formation and the ultrastructure of follicle ...
Bilinski, Szczepan (1983). "Oogenesis in Campodea sp.(Insecta, Diplura): Chorion formation and the ultrastructure of follicle ...
Bilinski, Szczepan (1983). "Oogenesis in Campodea sp.(Insecta, Diplura): Chorion formation and the ultrastructure of follicle ...
... this is also named the non-placental part of the chorion. As the chorion grows, the chorion laeve comes in contact with the ... This part of the chorion becomes smooth, and is named the chorion laeve (from the Latin word levis, meaning smooth). As it ... Some mollusks also have chorions as part of their eggs. For example fragile octopus eggs have only a chorion as their envelope ... and hence this part is named the chorion frondosum. Thus the placenta develops from the chorion frondosum and the decidua ...
Posts about chorion villus testing written by What Doctors Dont Tell You ... Two leading London consultant obstetricians deplored the use of chorion villus sampling the new, earlier screening test for ...
Chorion owned, developed and managed intellectual property brands.Chorions major properties are the literary works of Agatha ... Chorion is an intellectual property-owning brand creation and management business. Its principal properties and brands are the ... Chorion also recently acquired all rights to Mr. Men and Little Miss, created by Roger Hargreaves. ...
We conducted a retrospective review of 100 knees treated for symptomatic OA with micronized dehydrated human amnion/chorion ... Micronized Dehydrated Human Amnion Chorion Membrane Injection in the Treatment of Knee Osteoarthritis-A Large Retrospective ... Micronized Dehydrated Human Amnion Chorion Membrane Injection in the Treatment of Knee Osteoarthritis-A Large Retrospective ... Micronized Dehydrated Human Amnion Chorion Membrane Injection in the Treatment of Knee Osteoarthritis-A Large Retrospective ...
Les ovocytes sans chorions apparaîtront longs et minces, et ceux qui nont pas de membranes vitelline auront des extrémités ... Chorion et Vitelline Membrane Mechanical Removal: A Method to Prepare Drosophila Oocytes for Direct Observation Chorion and ... Pour enlever mécaniquement la membrane chorion et vitelline, placez les ovocytes entre les parties givrées de deux glissières ... Notez que les chorions vides seront visibles dans le liquide, et les ovocytes dépourvus de chorions apparaîtront plus longs et ...
Taking a sample for cytogenetic chorion and fetal karyotyping. Can be performed transcervically or transabdominally.Being an ... Chorion biopsy. Taking a sample for cytogenetic chorion and fetal karyotyping. Can be performed transcervically or ...
en chorion (n, mammal) An English term in ConceptNet 5.8 Source: Open Multilingual WordNet ...
Tag: chorion, documents keyword chorion
"Chorion" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical Subject Headings) ... This graph shows the total number of publications written about "Chorion" by people in this website by year, and whether " ... In MAMMALS, the chorion evolves into the fetal contribution of the PLACENTA. ... Proteomic Analysis and Cell Viability of Nine Amnion, Chorion, Umbilical Cord, and Amniotic Fluid-Derived Products. Cartilage. ...
An indispensible tool for researchers in all disciplines who wish to learn about the latest archaeological discoveries in Greece and Cyprus
4. Chorion. [SCENE III]. [The same laboratory after couple of months. The creature is born from the womb.] [THE MASTER]. ... 4. Chorion. 5. The First Experiment. 6. Manna Di San Nikola. 7. Die Vier Junkfrauen. 8. Digitale Gaudium. 9. Itije Hermesovo. ...
Automated Zebrafish Chorion Removal and Single Embryo Placement. Title. Automated Zebrafish Chorion Removal and Single Embryo ... Automated Zebrafish Chorion Removal and Single Embryo Placement. ...
Amplification of genes for chorion proteins during oogenesis in Drosophila melanogaster. Proc Natl Acad Sci U S A. 1980 Feb; 77 ...
Dehydrated Human Amnion-Chorion Membrane (Placenta) Reinforcement of Esophagectomy Anastomosis. Daniel L. Miller, Kevin T. ... Dehydrated Human Amnion-Chorion Membrane (Placenta) Reinforcement of Esophagectomy Anastomosis. / Miller, Daniel L.; Watkins, ... Dehydrated Human Amnion-Chorion Membrane (Placenta) Reinforcement of Esophagectomy Anastomosis. Annals of Thoracic Surgery. ... This report describes the use of a dehydrated human amnion-chorion membrane (dHACM) placenta allograft patch for reinforcement ...
Humant chorion gonadotropin (hCG) Den absolutte verdien og seriemålinger av hCG i et viabelt svangerskap må tolkes med ...
Holiday villa with shared pool in Neo Chorion Neo Chorion villa * 3 bedrooms ...
Quantitative studies of the collagen content of the human amnion and chorion]. February 1986 · Anatomischer Anzeiger ... The number of CD163(+) cells and neutrophils was counted in the following locations: fetal membranes amnion, chorion, and ...
ICSI and Day 5 embryo transfer synergistically increase the risk of monochorionic placentation. Patients undergoing these procedures should be counselled regarding these increased risks.
The process removed ≥95% of the embryos from their chorions with 2% embryo mortality by 24 hpf, and 2% of the embryos malformed ... Automated zebrafish chorion removal and single embryo placement: optimizing throughput of zebrafish developmental toxicity ... Automated zebrafish chorion removal and single embryo placement: optimizing throughput of zebrafish developmental toxicity ... Automated zebrafish chorion removal and single embryo placement: optimizing throughput of zebrafish developmental toxicity ...
Chorion, Intermediate-Chorion, Chorion Progenitors, Uncommitted Ectoplacental-Cone Cells (EPC), Trophoblast Giant Cells (TGC) ... The following markers were used as previously described25: chorion (Irx4, Esx1, Id1, Id3, Phlda2 and Klhl13); chorion ... the structure that crosses through the ChC and holds the bilaminar disc to the chorion, which later contributes to the ... progenitors (Sox3, Dusp6, Nat8l, Bmp4, Sox2, Esrrb and Eomes); intermediate chorion (Ascl2, Fgfr2, Cited1, Gjb3, Ndrg1, Irx2 ...
Landis G, Kelley R, Spradling AC, Tower J. The k43 gene, required for chorion gene amplification and diploid cell chromosome ... Landis, G, Kelley, R, Spradling, AC & Tower, J 1997, The k43 gene, required for chorion gene amplification and diploid cell ... Landis, G., Kelley, R., Spradling, A. C., & Tower, J. (1997). The k43 gene, required for chorion gene amplification and diploid ... A female-sterile allele of k43 specifically reduces chorion gene amplification in ovarian follicle cells. k43 was cloned by ...
Evaluation of fetal and maternal outcomes in chorion villus sampling (CVS). Minoo Movahedi1, Farinaz Farahbod2, Elahe Zarean3, ... Evaluation of fetal and maternal outcomes in chorion villus sampling (CVS). Adv Biomed Res [serial online] 2023 [cited 2023 Sep ... Maternal anxiety and its correlation with pain experience during chorion villus sampling and amniocentesis. J Pain Res 2017;10: ... Evaluation of fetal and maternal outcomes in chorion villus sampling (CVS).Adv Biomed Res 2023;12:133-133 ...
Lymphocytes in chorion, acute endometritis. 355. 1. 0. 7. +. -. +. +. -. Polymorphonuclear cells in decidua. ...
Friedman Test in Hydatidiform Mole and Chorion Epithelioma. Published: 09 January 1937; Br Med J 1 doi:10.1136/bmj.1.3966.71 ...
A: chorion with granulomas; B: spherules in chorion; C: spherule in placental villus; D: fetal lung with numerous granulomas. ... In the more columnar, vacuolated trophoblast beneath the chorion of microcotyledons, often contents of yellow inclusions are ...
Home in Neon Chorion Alikis house 2. A renovated one bedroom traditional stone built house. This is an ideal house for those ...
Eggs of both species are smooth and have no chorion ornamentation, reticulation, or protuberances. The micropyle is located at ...
  • The chorion is the outermost fetal membrane around the embryo in mammals, birds and reptiles (amniotes). (wikipedia.org)
  • To compensate for this, the chorion and the allantois fuse together to form the chorioallantoic membrane. (wikipedia.org)
  • Dehydrated human amnion/chorion membrane (dHACM) allografts have been shown to be effective in the treatment of DFUs. (medscape.com)
  • [ 7 ] PURION Processed dehydrated human amnion/chorion membrane (dHACM) allografts (EpiFix, MiMedx Group Inc, Marietta, GA) contain an array of growth factors known to play a critical role in the physiological processes of normal healing and tissue regeneration. (medscape.com)
  • The aim of this investigation is to show the use of amnion/chorion membrane to increase the keratinized tissue. (quintpub.com)
  • Use of the amnion/chorion membrane seems to improve keratinized-tissue expansion. (quintpub.com)
  • The aim of this randomized controlled clinical study is to compare the use of a human amnion - chorion membrane to a collagen membrane in an exposed- barrier ridge preservation technique . (bvsalud.org)
  • Twenty-one participants received human amnion - chorion membrane (test) during ridge preservation while 22 participants received the collagen membrane (control). (bvsalud.org)
  • 05). Using either a human amnion - chorion membrane or type 1 bovine collagen as the open barrier did not change healing, compromise ridge dimensions, or affect bone vitality between the 2 groups. (bvsalud.org)
  • The chorion is the outermost fetal membrane. (healthline.com)
  • The chorion is the portion of fetal membrane that eventually forms the fetal side of the placenta. (medlineplus.gov)
  • EPIFIX® Dehydrated Human Amnion/Chorion Membrane (dHACM) Allograft MIMEDX Group, Inc. (woundsource.com)
  • Advanced engagement with the U.S. Food and Drug Administration ("FDA") for the Company's next knee osteoarthritis ("KOA") registrational study with its micronized dehydrated human amnion chorion membrane ("mdHACM") product. (biospace.com)
  • Once doctors get the placenta, they separate the amniotic membrane into its two sections, called the amnion and chorion. (askdrmanny.com)
  • As it takes no share in the formation of the placenta, this is also named the non-placental part of the chorion. (wikipedia.org)
  • Thus the placenta develops from the chorion frondosum and the decidua basalis. (wikipedia.org)
  • The chorion connects the amnion, amniotic fluid, and the fetus to the placenta. (healthline.com)
  • Well, if two twins share a chorion, they'll share one placenta. (healthline.com)
  • The life-support system for the embryo and fetus will be the the chorion, amnionic fluid, the umbilical cord, and the placenta. (nih.gov)
  • The amnion and chorion tissue found in the placenta have demonstrated their efficacy in ocular repair and wound healing. (cryo-cell.com)
  • As we discussed earlier, the sooner the split occurs, the more independent the MZ twins will be in relation to having separate or shared chorion, amnion and placenta. (howstuffworks.com)
  • In humans and other mammals (excluding monotremes), the chorion is one of the fetal membranes that exist during pregnancy between the developing fetus and mother. (wikipedia.org)
  • In reptiles, birds, and monotremes, the chorion is one of the four extraembryonic membranes that make up the amniotic egg that provide for the nutrients and protection needed for the embryo's survival. (wikipedia.org)
  • The chorion is one of the membranes that exists during pregnancy between the developing fetus and mother. (bionity.com)
  • Human fetal membranes are composed of amnion, chorion and decidua tissues, which play a critical role in defense barriers as well as maintenance of pregnancy and parturition. (nih.gov)
  • Comparison of Dehydrated Human Amnion-Chorion and Type 1 Bovine Collagen Membranes in Alveolar Ridge Preservation: A Clinical and Histological Study. (bvsalud.org)
  • The fetal side includes the umbilical cord, amnion, and chorion. (cryo-cell.com)
  • The chorion undergoes rapid proliferation and forms numerous processes, the chorionic villi, which invade and destroy the uterine decidua, while simultaneously absorbing nutritive materials from it for the growth of the embryo. (wikipedia.org)
  • The amnion is the outer layer that surrounds the embryo, and the chorion is the inner layer. (askdrmanny.com)
  • Recent findings indicate that Ureaplasma parvum bacteria can infect the chorion tissue, thereby impacting pregnancy outcome. (wikipedia.org)
  • of, related to, or secreted by the chorion or related tissue. (wordsmyth.net)
  • The villi at the embryonic pole, which is in contact with the decidua basalis, increase greatly in size and complexity, and hence this part is named the chorion frondosum. (wikipedia.org)
  • On the other hand, the villi on that part of the chorion which is in contact with the decidua placentalis increase greatly in size and complexity, and hence this part is named the chorion frondosum. (bionity.com)
  • The chorion and the amnion together form the amniotic sac. (wikipedia.org)
  • the chorionic villi emerge from the chorion, invade the endometrium, and allow the transfer of nutrients from maternal blood to fetal blood. (wikipedia.org)
  • Choriogenesis Chorioamnionitis, an inflammation of the chorion and amnion, usually due to bacterial infection Chorionic hematoma Gestational trophoblastic disease, any abnormal proliferation of the trophoblasts, including choriocarcinoma, a highly invasive cancer. (wikipedia.org)
  • The chorion contains chorionic villi, which are small finger-like projections. (medlineplus.gov)
  • At the time of hatching, the fetus becomes detached from the chorion as it emerges from the shell. (wikipedia.org)
  • The role of chorion on toxicity of silver nanoparticles in the embryonic zebrafish assay. (oregonstate.edu)
  • This study was designed to investigate how the size- and surface coating-dependent toxicity of silver nanoparticles (AgNPs) is influenced by the presence and absence of the chorion in an embryonic zebrafish assay. (oregonstate.edu)
  • Embryonic toxicity in the absence of the chorion was greater than in its presence. (oregonstate.edu)
  • If twins have separate chorion, they will have two separate placentas. (healthline.com)
  • Like the chorion, twins can either share an amnion or have one all of their own. (healthline.com)
  • Our results demonstrate the permeability function of the chorion on the size- and surface coating-dependent toxicity of AgNPs. (oregonstate.edu)
  • Recent studies have demonstrated that influenza virus infection induced the gene expression of a set of pro-inflammatory cytokines, such as IL-1beta, IL-6, TNF-alpha, interferon (IFN)-beta, IFN-gamma and granulocyte macrophage colony-stimulating factor (GM-CSF), and the secretion of unidentified monocyte differentiation-inducing factor(s) from primary cultured chorion cells undergoing apoptosis. (nih.gov)
  • 1989) Amplification enhancers and replication origins in the autosomal chorion gene cluster of Drosophila. (forth.gr)
  • 1989) Amplification-control element ACE-3 is important but not essential for autosomal chorion gene amplification. (forth.gr)
  • Since this is the inner layer, the options here depend on the chorion. (healthline.com)
  • The smaller 20 nm AgNPs were more toxic than the larger 110 nm AgNPs, regardless of the chorion and test media. (oregonstate.edu)
  • The large, luxurious, en-suite bathroom consists of a bath with overhead shower, as well as a separate walk-in shower. (airbnb.com)
  • On the other hand, two chorions mean two separate amnions. (healthline.com)
  • Recent studies indicate that the chorion may be susceptible to pathogenic infections. (wikipedia.org)