| 46, XX | 46 chromosomes, 2 X chromosomes (normal female) |
|---|---|
| 46, XY | 46 chromosomes, 1 X and 1 Y chromosome (normal male) |
| Gm | an allotype marker on the heavy chains of immunoglobins |
| mar | margin; marker [chromosome] |
| mar(X) | marker X [chromosome] |
| DMs | Double Minute chromosomes |
|---|---|
| dmin | Double minute chromosomes |
| PCC | Prematurely condensed chromosomes |
| SMC | Structural Maintenance of Chromosomes |
| MAS | Marker Assisted Selection |
| paraganglioma, extra-adrenal | A relatively rare, usually benign neoplasm originating in the chemoreceptor tissue of the carotid body, glomus jugulare, and aortic bodies. It consists histologically of rounded or ovoid hyperchromatic cells that tend to be grouped in an alveolus-like pattern within a scant to moderate amount of fibrous stroma and a few large thin-walled vascular channels. They are uncommon before the age of 20, with a female predominance in some series. (12 Dec 1998) |
|---|---|
| extra | 1. Something in addition to what is due, expected, or customary; something in addition to the regular charge or compensation, or for which an additional charge is made; as, at European hotels lights are extras. 2. <prefix> Without, outside of. Source: Websters Dictionary (21 Jun 2000) |
| extra-abdominal desmoid | A deep-seated firm tumour, most frequently occurring on the shoulders, chest, or back of young men or women, consisting of collagenous fibrous tissue that infiltrates surrounding muscle; frequently recurs but does not metastasize. (05 Mar 2000) |
| extra-anatomic bypass | A vascular bypass that does not conform to the preexisting anatomy. (05 Mar 2000) |
| extra-articular | <anatomy> Situated outside of a joint. Source: Websters Dictionary (01 Mar 1998) |
| extra-axial | Off the axis; applied to intracerebral lesions that do not arise from the brain itself. (05 Mar 2000) |
| extra-floral | Of nectaries, not within the flower. (09 Oct 1997) |
| extra nodal lymphoma | <oncology, tumour> Literally outside the lymph nodes, but exhibiting the characteristics of lymph node cancer. A term used to describe the extent and site of disease. (27 Sep 1997) |
| extra-ocular muscle disease | <radiology> Graves disease, pseudotumour, lymphoma, metastasis, infection, carotid-cavernous fistula, granulomatous disease (12 Dec 1998) |
| allotypic marker | Synonym: allotype. (05 Mar 2000) |
| genetic marker | A gene which has an easily identifiable phenotype so that one can tell apart cells or individuals which have the gene and those which do not have it. Such a gene can also be used as a probe to mark cell nuclei or chromosomes so that they can easily be isolated or identified from other nuclei or chromosomes later. (09 Oct 1997) |
| marker | An identifiable physical location on a chromosome (for example, restriction enzyme cuttingsite, gene) whose inheritance can bemonitored. Markers can beexpressed regions of DNA (genes) or some segment of DNA with no knowncoding function but whose pattern of inheritance can be determined. See: restriction fragment length polymorphism. (09 Oct 1997) |
| marker chromosome | An abnormal chromosome that is distinctive in appearance but not fully identified. For example, the fragile x chromosome was once called the marker x. (12 Dec 1998) |
| marker enzyme | <enzyme> An enzyme that is used to identify a specific cell type, cell organelle, or cell component. (05 Mar 2000) |
| marker gene | Gene that confers some readily detectable phenotype on cells carrying the gene, either in culture or in transgenic or chimeric organisms. Gene could be an enzymic reporter gene, a selectable marker conferring antibiotic resistance or a cell membrane protein with a characteristic epitope. (18 Nov 1997) |
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