| SPR | sepiapterin reductase; serial probe recognition; specific pathogen free; Society for Pediatric Radio... |
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| SRP | short rib-polydactyly [syndrome]; signal recognition particle; Society for Radiological Protection; ... |
| SRPR | signal recognition particle receptor |
| endothelial growth factors | These growth factors are soluble mitogens secreted by a variety of organs. The factors are a mixture of two single chain polypeptides which have affinity to heparin. Their molecular weight are organ and species dependent. They have mitogenic and chemotactic effects and can stimulate endothelial cells to grow and synthesise DNA. The factors are related to both the basic and acidic fibroblast growth factors but have different amino acid sequences. (12 Dec 1998) |
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| epidemiologic factors | Events, characteristics, or other definable entities that have the potential to bring about a change in a health condition or other defined outcome. (12 Dec 1998) |
| essential food factors | Those substances required in the diet: certain amino acids and unsaturated fatty acids, vitamins, essential minerals, etc. (05 Mar 2000) |
| Factors I XII | <haematology> Blood clotting factors, especially from humans. These factors form a cascade in which the activation of the first factor leads to enzymic attack on the next factor and so on, finally resulting in blood clotting. (18 Nov 1997) |
| uncoupling factors | Substances such as dinitrophenol that allow oxidation in mitochondria to proceed without the usual concomitant phosphorylation to produce ATP; these poisons thus "uncouple" oxidation and phosphorylation. Synonym: uncoupling factors. (05 Mar 2000) |
| lactose factors | Plasmids which determine the ability of a bacterium to ferment lactose. (12 Dec 1998) |
| LE factors | Antinuclear immunoglobulins in plasma of persons with disseminated lupus erythematosus, associated with positive LE tests. (05 Mar 2000) |
| leukocyte migration-inhibitory factors | Protein factor(s) released by sensitised lymphocytes (and possibly other cells) that inhibit the movement of leukocytes, especially polymorphonuclear cells, away from their site of release. Assays for these factors are used as tests for cellular immunity. Two of the common assays are the leukocyte migration capillary tube technique (lmct) and the leukocyte migration agarose technique (lmat). (12 Dec 1998) |