| pyrogens | Substances capable of increasing body temperature; they may be of microbial origin, often polysaccharides and may contaminate distilled water. (12 Dec 1998) |
|---|---|
| leukocytic pyrogens | Fever producing substance released by leucocytes (and Kuppfer cells in particular) that acts on the hypothalamic thermoregulatory centre. Now known to be interleukin-1. (18 Nov 1997) |
| exogenous | <biology> Developed or originating outside the organism, as exogenous disease. Origin: Gr. Gennan = to produce (18 Nov 1997) |
| exogenous creatinine clearance | A term distinguishing measurements based on infusing creatinine intravenously to raise its plasma concentration and facilitate its accurate chemical determination. (05 Mar 2000) |
| exogenous cycle | The portion of a parasitic life cycle occurring outside the host. (05 Mar 2000) |
| exogenous depression | Similar signs and symptoms as endogenous depression but the precipitating factors are social or environmental and outside the individual. (05 Mar 2000) |
| exogenous DNA | <molecular biology> DNA originating outside an organism. (09 Oct 1997) |
| exogenous fibres | Nerve fibre's by which a given region of the central nervous system is connected with other regions; the term applies to both afferent and efferent fibre connections. (05 Mar 2000) |
| exogenous ochronosis | Pigmentation of the skin of the face and elsewhere from prolonged topical exposure to hydroquinone-containing bleaching creams. (05 Mar 2000) |
| exogenous pigmentation | Discoloration of the skin or tissues by a pigment introduced from without. (05 Mar 2000) |