| PNET | Primitive Neuro-Ectodermal(-Epithelial) Tumor |
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| HbP | primitive hemoglobin |
| PNET | peripheral neuroepithelioma; primitive neuroectodermal tumor |
| PPNET | Peripheral primitive neuroectodermal tumor |
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| PNET | Primitive Neuroectodermal Tumor |
| PTA | Primitive trigeminal artery |
| PHSC | primitive hematopoietic stem cell |
| PS | primitive streak |
| primitive | Undeveloped or in early stages of development, undifferentiated. (16 Dec 1997) |
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| 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 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) |
| primitive neuroectodermal tumour | A designation used to refer to a group of morphologically similar embryonal neoplasms that arise in intracranial and peripheral sites of the nervous system and which may show various degrees of cellular differentiation; includes medulloblastoma, pineoblastoma, etc. (05 Mar 2000) |
| primitive neuroectodermal tumours | A type of brain tumour. Prenatal diagnosis: diagnosis before birth. Methods for prenatal diagnosis include ultrasound (of the uterus, placenta and developing foetus), chorionic villus sampling to obtain tissue for chromosome or biochemical analysis, amniocentesis to obtain amniotic fluid for the analysis of chromosmes, enzymes, DNA, etc. A growing number of birth defects and diseases are now amenable to prenatal diagnosis. Also called antenatal diagnosis. (12 Dec 1998) |
| primitive node | 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 palate | In the early embryo, the mesoderm-filled shelf, formed from the medial nasal process, that anteriorly separates the oral cavity below from the primitive nasal cavities above. Synonym: primitive palate. (05 Mar 2000) |
| primitive perivisceral cavity | The space between the ectoderm and endoderm in the gastrula. Synonym: primitive perivisceral cavity. (05 Mar 2000) |
| neuroectodermal tumour, primitive | A malignant brain tumour sharing common features and biologic properties with medulloblastoma. Some pathologists and clinicians use the terms interchangeably: they both can disseminate throughout the nervous system and, in some cases, systemically. most lesions arise from the posterior fossa in children under five years of age. The tumour often produces hydrocephalus and symptoms of increased intracranial pressure. Papilledema is often present. (12 Dec 1998) |
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| primitive |
crude: belonging to an early stage of technical development; characterized by simplicity and (often) crudeness; "the crude weapons and rude agricultural implements of early man"; "primitive movies of the 1890s"; "primitive living conditions in the Appalachian mountains" a person who belongs to an early stage of civilization archaic: little evolved from or characteristic of an earlier ancestral type; "archaic forms of life"; "primitive mammals"; "the okapi is a short-necked primitive cousin of the giraffe" a mathematical expression from which another expression is derived used of preliterate or tribal or nonindustrial societies; "primitive societies" a word serving as the basis for inflected or derived forms; "`pick' is the primitive from which `picket' is derived" of or created by one without formal training; simple or naive in style; "primitive art such as that by Grandma Moses is often colorful and striking"
Ãâó: wordnet.princeton.edu/perl/webwn
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| primitive aorta |
primordial aorta, either of two main vascular trunks before fusion into a single aorta in the early embryo.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| primitive circulation |
primordial circulation, the earliest circulation by which nutriment and oxygen are conveyed to the embryo; called also first c.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| primitive |
originally meant the initial, primary level.
Ãâó: www.geocities.com/paris/chateau/6110/europeconcept...
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| primitive neuroectodermal tumor |
PNET. One of a group of cancers that develop from the same type of early cells, and share certain biochemical and genetic features. Some PNETs develop in the brain and central nervous system (CNS-PNET), and others develop in sites outside of the brain such as the limbs, pelvis, and chest wall (peripheral PNET).
Ãâó: www.stjude.org/glossary
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| primitive | a word serving as the basis for inflected or derived forms |
|---|---|
| primitive | a mathematical expression from which another expression is derived |
| primitive | a person who belongs to early stage of civilization |
| primitive | (anthropology |
| primitive | little evolved from or characteristic of an earlier ancestral type |
| primitive | belonging to an early stage of technical development |
| primitive | (fine arts) of or created by one without formal training |
| primitive | a person who belongs to early stage of civilization |
| primitive | in a primitive style or manner |
| primitive | with reference to the origin or beginning |
| primitive | a wild or unrefined state |
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