| ¿µ¹® | chorion | ÇÑ±Û | À¶¸ð¸· |
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| PNET | Primitive Neuro-Ectodermal(-Epithelial) Tumor |
|---|---|
| HbP | primitive hemoglobin |
| PNET | peripheral neuroepithelioma; primitive neuroectodermal tumor |
| CVS | Chorion villus sampling |
|---|---|
| PPNET | Peripheral primitive neuroectodermal tumor |
| PNET | Primitive Neuroectodermal Tumor |
| PTA | Primitive trigeminal artery |
| PHSC | primitive hematopoietic stem cell |
| primitive chorion | The chorion before its villi are well formed. Synonym: previllous chorion. (05 Mar 2000) |
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| chorion | 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) |
|---|---|
| chorion frondosum | The part of the chorion where the villi persist, forming the foetal part of the placenta. Synonym: shaggy chorion. (05 Mar 2000) |
| chorion laeve | The portion of the chorion from which the villi disappear in the later stages of pregnancy. Synonym: smooth chorion. (05 Mar 2000) |
| previllous chorion | The chorion before its villi are well formed. Synonym: previllous chorion. (05 Mar 2000) |
| shaggy chorion | The part of the chorion where the villi persist, forming the foetal part of the placenta. Synonym: shaggy chorion. (05 Mar 2000) |
| smooth chorion | The portion of the chorion from which the villi disappear in the later stages of pregnancy. Synonym: smooth chorion. (05 Mar 2000) |
| primitive | Undeveloped or in early stages of development, undifferentiated. (16 Dec 1997) |
| primitive aorta | The paired aortic primordia in young embryos. (05 Mar 2000) |
| primitive costal arches | Arch's formed in the thoracic region of the vertebral column in the embryo from the costal processes or costal elements which give rise to the ribs. (05 Mar 2000) |
| primitive erythroblast | <cell biology> Large cell with euchromatic nucleus found in mammalian embryos. In the mouse, the cells are located in the yolk sac and are responsible for early production of erythrocytes with foetal haemoglobin. (18 Nov 1997) |
| primitive furrow | The median depression in the primitive streak flanked by the primitive ridges. Synonym: primitive furrow. (05 Mar 2000) |
| primitive groove | The median depression in the primitive streak flanked by the primitive ridges. Synonym: primitive furrow. (05 Mar 2000) |
| primitive gut | A flat sheet of intraembryonic endoderm that will change into a tubular gut due to the folding of embryonic body-head, tail and lateral body folds. Synonym: archenteron, celenteron, endodermal canal, subgerminal cavity. (05 Mar 2000) |
| primitive knot | A local thickening of the blastoderm at the cephalic end of the primitive streak of the embryo. Synonym: Hensen's knot, Hensen's node, Hubrecht's protochordal knot, primitive knot, protochordal knot. (05 Mar 2000) |
| primitive meninx | The embryonic loose mesenchymatous tissue surrounding the brain and spinal cord; from it the three definite meninges (arachnoidea, dura mater, and pia mater) are derived. Synonym: meninx primitiva. Meninx serosa, obsolete term for arachnoidea; the arachnoid is actually not a serous membrane. (05 Mar 2000) |
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