| ATL | Achilles tendon lengthening; acute T-cell leukemia; adult T-cell leukemia; anterior tricuspid leafle... |
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| BMC | blood mononuclear cell; bone marrow cell; bone mineral content |
| CCL | carcinoma cell line; certified cell line; Charcot-Leyden crystal; continuing care level; critical ca... |
| CI | cardiac index; cardiac insufficiency; cell immunity; cell inhibition; cephalic index; cerebral infar... |
| CMI | carbohydrate metabolism index; care management integration; case mix index; cell-mediated immunity; ... |
| stem and loop structure | <molecular biology> The structure of tRNAs is so termed because it has four base paired stems and three loops (not base paired), one of which contains the anticodon. (18 Nov 1997) |
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| neonatal diseases and abnormalities | Diseases existing at birth and often before birth, regardless of causation. Of these congenital diseases, those characterised by structural deformities are termed abnormalities. (12 Dec 1998) |
| neoplasms, adnexal and skin appendage | Neoplasms composed of sebaceous or sweat gland tissue or tissue of other skin appendages. The concept does not refer to neoplasms located in the sebaceous or sweat glands or in the other skin appendages. (12 Dec 1998) |
| neoplasms, complex and mixed | Neoplasms composed of more than one type of neoplastic tissue. (12 Dec 1998) |
| neoplasms, connective and soft tissue | Neoplasms developing from some structure of the connective and subcutaneous tissue. The concept does not refer to neoplasms located in connective or soft tissue. (12 Dec 1998) |
| neoplasms, cystic, mucinous, and serous | Neoplasms containing cyst-like formations or producing mucin or serum. (12 Dec 1998) |
| neoplasms, ductal, lobular, and medullary | Neoplasms, usually carcinoma, located within the centre of an organ or within small lobes, and in the case of the breast, intraductally. The emphasis of the name is on the location of the neoplastic tissue rather than on its histological type. most cancers of this type are located in the breast. (12 Dec 1998) |
| neoplasms, glandular and epithelial | Neoplasms composed of glandular tissue, an aggregation of epithelial cells that elaborate secretions, and of any type of epithelium itself. The concept does not refer to neoplasms located in the various glands or in epithelial tissue. (12 Dec 1998) |
| nephelometry and turbidimetry | Chemical analysis based on the phenomenon whereby light, passing through a medium with dispersed particles of a different refractive index from that of the medium, is attenuated in intensity by scattering. In turbidimetry, the intensity of light transmitted through the medium, the unscattered light, is measured. In nephelometry, the intensity of the scattered light is measured, usually, but not necessarily, at right angles to the incident light beam. (12 Dec 1998) |
| neuropathies, hereditary motor and sensory | A group of slowly progressive inherited disorders in which the predominant involvement is the peripheral motor neurons with lesser involvement of the peripheral sensory neurons. Neuronal degeneration and atrophy are characteristic of these disorders. Some of the associated characteristics are phytanic acid excess, optic atrophy, and retinitis pigmentosa. (12 Dec 1998) |
| neuropathies, hereditary sensory and autonomic | A group of inherited disorders in which there is selective involvement of the peripheral sensory and autonomic neurons and degeneration of fibres by axonal atrophy and degeneration. Five types of disorders have been described and classified type I through type v. (12 Dec 1998) |
| neurotransmitters and neurotransmitter agents | A collective grouping for neurotransmitters and substances that act on the neurotransmitter system. (12 Dec 1998) |
| streptodornase and streptokinase | <enzyme> A mixture of the enzymes (streptokinase and streptodornase) produced by haemolytic streptococci. It is used topically on surface lesions and by instillation in closed body cavities to remove clotted blood or fibrinous or purulent accumulations. It is also used as a skin test antigen in evaluating generalised cell-mediated immunodeficiency. Registry number: EC 3.- (12 Dec 1998) |
| nevi and melanomas | A collective term for the various types of nevi and melanomas. (12 Dec 1998) |
| node of Aschoff and Tawara | <cardiology> The location in the heart's conduction system, between the atria and the ventricles, which conducts the normal electrical impulse from the atria to the ventricles. (27 Sep 1997) |