| chorionic gonadotrophin | <hormone, tumour marker> A hormone that is produced by the developing placenta and by the fertilized egg after implantation in the uterine wall. This hormone is measured in the blood to determine pregnancy. Human chorionic gonadotrophin increases in quantity through the first trimester of pregnancy and begin to taper off after 85 days. Serum human chorionic gonadotrophin testing is accurate 48 hour post conception. Urine human chorionic gonadotrophin testing is a popular method of home pregnancy determination as human chorionic gonadotrophin can be detected in urine. Acronym: HCG (18 Nov 1997) |
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| chorionic gonadotropin | A glycoprotein with a carbohydrate fraction composed of d-galactose and hexosamine, extracted from the urine of pregnant women and produced by the placental trophoblastic cells; its most important role appears to be stimulation, during the first trimester, of ovarian secretion of the oestrogen and progesterone required for the integrity of conceptus; it appears to play no significant role in the last two trimesters of pregnancy, as the oestrogen and progesterone are then formed by the placenta. Synonym: anterior pituitary-like hormone, choriogonadotropin, chorionic gonadotropic hormone, chorionic gonadotrophic hormone, placenta gonadotropin, placentagonadotropin. (05 Mar 2000) |
| chorionic gonadotropin unit | The specific gonadotropic activity of 0.1 mg of the standard preparation of chorionic gonadotropin originating from the urine or placentas of pregnant women. (05 Mar 2000) |
| chorionic gonadotropin, beta subunit, human | The beta subunit of human chorionic gonadotropin. It is used as a clinical marker to facilitate early detection of normal pregnancy and significantly contributes to the diagnosis of various pregnancy-related disorders, such as ectopic pregnancy, spontaneous abortion, hydatidiform mole, choriocarcinoma, or trisomy 21. Further, determination of this marker is immensely helpful to guide curative intervention in testicular cancer. Other possible clinical uses includes as a marker of cancers of the bladder, pancreas, or biliary tract. (scan j clin lab invest suppl 1993;216:97-104) (12 Dec 1998) |
| chorionic gonadotropin, human | A human hormone made by chorionic cells (in the foetal part of the placenta), hCG is directed at the gonads and stimulates them. HCG becomes detectable (by immunologic means) within days of fertilization and forms the foundation of the common pregnancy tests. The level of hCG in maternal serum also enters as one component in the double and the triple screens used during pregnancy to assign risks of Down syndrome and other foetal disorders. (12 Dec 1998) |
| chorionic growth hormone-prolactin | human placental lactogen |
| chorionic plate | That portion of the chorionic wall in the region of its uterine attachment; it consists of the mesoderm that lines the chorionic vesicle and, on the maternal side, of the trophoblast that lines the intervillous spaces; in the last half of gestation, the mesodermal connective tissue is largely replaced by fibrinoid material, and the amniotic membrane is adherent to the foetal side of the plate. (05 Mar 2000) |
| chorionic sac | 1. Protective membrane around the eggs of insects and fishes. 2. Extraembryonic membrane surrounding the embryo of amniote vertebrates. The outer epithelial layer of the chorion is derived from the tropoblast. (18 Nov 1997) |
| chorionic villi | <anatomy> The vascular projections from the chorion. (27 Sep 1997) |
| chorionic villi sampling | A method for diagnosis of foetal diseases by sampling the cells of the placental chorionic villi for DNA analysis, presence of bacteria, concentration of metabolites, etc. The advantage over amniocentesis is that the procedure can be carried out in the first trimester. (12 Dec 1998) |
| chorionic villus biopsy | Transcervical or transabdominal sampling of the chorionic villi for genetic analysis. (05 Mar 2000) |
| chorionic villus sampling | <procedure> A procedure for obtaining a sample of chorionic villi for the purpose of genetic testing, usually performed between 9 and 12th weeks of pregnancy. Amniocentesis testing has greatly supplanted the use of this form of genetic testing. (27 Sep 1997) |
| Chorioptes | A genus of cosmopolitan and very common mange mites (family Psoroptidae) that cause chorioptic or symbiotic domestic animal mange, characterised by restriction of the mange to certain parts of the animal's body. Various species described, i.e., Chorioptes equi of horses, Chorioptes caprae of goats, Chorioptes ovis of sheep, Chorioptes cuniculi of rabbits, are now thought to be physiologic strains of one species, Chorioptes bovis of cattle. Origin: G. Chorion, membrane, + optos, visible (05 Mar 2000) |
| chorioptic mange | Mange caused by mites of the genus Chorioptes; in many cases it involves the skin of much of the body. (05 Mar 2000) |
| chorioretinal | Relating to the choroid coat of the eye and the retina. Synonym: retinochoroid. (05 Mar 2000) |
Synonyms : Mutase, Chorismate, Pyruvatemutase, Chorismate
Synonyms : Acid, Chorismic
Synonyms : Aberrant Tissues, Choristomas, Ectopic Tissues, Heterotopic Tissues, Tissue, Aberrant, Tissue, Ectopic, Tissue, Heterotopic, Tissues, Aberrant, Tissues, Ectopic, Tissues, Heterotopic
| choriogonadotropin |
Human chorionic gonadotropin (hCG) is a peptide hormone produced in pregnancy, that is made by the embryo soon after conception and later by the trophoblast (part of the placenta). Its role is to prevent the disintegration of the corpus luteum of the ovary and thereby maintain progesterone production that is critical for a pregnancy in humans. hCG may have additional functions, for instance it is thought that it affects the immune tolerance of the pregnancy. ...
출처: en.wikipedia.org/wiki/Choriogonadotropin
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| chorionic gonadotropin |
Human chorionic gonadotropin (hCG) is a peptide hormone produced in pregnancy, that is made by the embryo soon after conception and later by the trophoblast (part of the placenta). Its role is to prevent the disintegration of the corpus luteum of the ovary and thereby maintain progesterone production that is critical for a pregnancy in humans. hCG may have additional functions, for instance it is thought that it affects the immune tolerance of the pregnancy. ...
출처: en.wikipedia.org/wiki/Chorionic_gonadotropin
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| chorioallantoic culture |
the cultivation of microorganisms, cells, or tissues on the chorioallantois of the developing chick.
출처: www.merckmedicus.com/pp/us/hcp/thcp_dorlands_conte...
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| chorionic villus sampling |
A technique for prenatal diagnosis of birth defects, involving taking a sample of cells from the chorionic villus and analyzing them.
출처: highered.mcgraw-hill.com/sites/0072986360/student_...
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| chorion |
An extraembryonic membrane that surrounds the zebrafish embryo during the first 2 days of development.
출처: www.nature.com/nrg/journal/v2/n12/glossary/nrg1201...
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