| low tension glaucoma | Optic nerve atrophy and excavation with typical field defects of glaucoma but without abnormal increase in intraocular pressure. (05 Mar 2000) |
|---|---|
| age factors | Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from aging, a physiological process, and time factors which refers only to the passage of time. (12 Dec 1998) |
| bacteriocin factors | Bacterial plasmid's responsible for the elaboration of bacteriocins. Synonym: bacteriocin factors, bacteriocinogens. (05 Mar 2000) |
| B-cell differentiation/growth factors | Various substances, usually obtained from the supernatant of T-cell cultures, such as interleukin 4, 5, and 6. These substances are necessary for B-cell growth, maturation, and differentiation into plasma cells or B memory cells. (05 Mar 2000) |
| biological factors | Compounds made by living organisms. They have biological or physiological activities. (12 Dec 1998) |
| biotic factors | Environmental factor's or influences resulting from the activities of living organisms, as contrasted to those resulting from climatic, geological, or other factor's. (05 Mar 2000) |
| blood coagulation factors | Endogenous substances, usually proteins, that participate in the blood coagulation process. (12 Dec 1998) |
| macrophage migration-inhibitory factors | Proteins released by sensitised lymphocytes and possibly other cells that inhibit the migration of macrophages away from the release site. The structure and chemical properties may vary with the species and type of releasing cell. (12 Dec 1998) |
| recognition factors | Factors which effect "recognition" of target antigens by polymorphonuclear leukocytes; apparently the Fc portion of antibody molecules and the activated third component of complement (C3), for both of which phagocytes have receptor sites. (05 Mar 2000) |
| releasing factors | Hormones produced by the hypothalamus whichstimulate the release of other hormones in the pituitary gland. (09 Oct 1997) |
| resistance factors | Plasmid's carrying genes responsible for antibiotic (or antibacterial drug) resistance among bacteria (notably Enterobacteriaceae); they may be conjugative or nonconjugative plasmid's, the former possessing transfer genes (resistance transfer factor) lacking in the latter. Synonym: R factors, R plasmids, resistance factors, resistance-transferring episomes. (05 Mar 2000) |
| peptide elongation factors | Protein factors uniquely required during the elongation phase of protein synthesis. (12 Dec 1998) |
| peptide initiation factors | Protein factors uniquely required during the initiation phase of protein synthesis. (12 Dec 1998) |
| peptide termination factors | Proteins that are exclusively involved in the termination reactions of protein synthesis on the ribosome. (12 Dec 1998) |
| C factors | Proteins that restore phosphorylating ability to mitochondria that have lost it, i.e., have become "uncoupled" so that oxidation and electron transport no longer produces ATP. Usually termed coupling factor F1, F2, etc. Synonym: C factors. (05 Mar 2000) |