| PNET | Primitive Neuro-Ectodermal(-Epithelial) Tumor |
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| HbP | primitive hemoglobin |
| PNET | peripheral neuroepithelioma; primitive neuroectodermal tumor |
| GUT | Genito-Urinary Tract |
| GA | Gamblers Anonymous; gastric analysis; gastric antrum; general anesthesia; general angiography; gener... |
| gut GLI | Gut glucagon-like immunoreactivity |
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| GALT | Gut associated lymphoid tissue |
| GKLF | Gut-enriched Kruppel-like factor |
| PPNET | Peripheral primitive neuroectodermal tumor |
| PNET | Primitive Neuroectodermal Tumor |
| 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) |
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| blind gut | <anatomy> A blind pouch-like commencement of the colon in the right lower quadrant of the abdomen at the end of the small intestine. The appendix is a diverticulum that extends off the caecum. (13 Nov 1997) |
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| gut | 1. A narrow passage of water; as, the Gut of Canso. 2. An intenstine; a bowel; the whole alimentary canal; the enteron; (pl) bowels; entrails. 3. One of the prepared entrails of an animal, especially. Of a sheep, used for various purposes. See Catgut. 4. The sac of silk taken from a silkworm (when ready to spin its cocoon), for the purpose of drawing it out into a thread. This, when dry, is exceedingly strong, and is used as the snood of a fish line. Blind gut. See Caecum, . Origin: OE. Gut, got, AS. Gut, prob. Orig, a channel, and akin to geotan to pour. See FOUND to cast. Source: Websters Dictionary (01 Mar 1998) |
| gut-associated lymphoid tissue | <physiology> Peripheral lymphoid organ consisting of lymphoid tissue associated with the gut (Peyer's patches, tonsils, mesenteric lymph nodes and the appendix). It is especially rich in B-cells and is responsible for localised immunity to pathogens such as bacteria, viruses, and parasites. (20 Sep 2002) |
| postanal gut | An extension of the hindgut caudal to the point at which the anal opening is formed. Synonym: postcloacal gut, tailgut. (05 Mar 2000) |
| postcloacal gut | An extension of the hindgut caudal to the point at which the anal opening is formed. Synonym: postcloacal gut, tailgut. (05 Mar 2000) |
| preoral gut | The part of the embryonic foregut extending cephalad to the level of the oral plate and caudal to the pituitary diverticulum (Rathke's pouch). Synonym: preoral gut. (05 Mar 2000) |
| endocrine cells of gut | Cells found throughout the lining of the gastrointestinal tract that contain regulatory peptide hormones and/or biogenic amines. The substances are located in secretory granules and act in an endocrine or paracrine manner. Some of these substances are also found in neurons in the gut. There are at least 15 different types of endocrine cells of the gut. Some take up amine precursors and have been called apud cells. However, most endocrine cells of the gut apparently have endodermal rather than neuroectodermal origin, so the relationship with apud cells is not clear. (12 Dec 1998) |
| 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 chorion | The chorion before its villi are well formed. Synonym: previllous chorion. (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 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) |
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