| biological phenomena | Biological functions and activities at the organic and molecular levels in humans, animals, microorganisms, and plants. For biochemical and metabolic processes, biochemical phenomena is available. (12 Dec 1998) |
|---|---|
| chemical and pharmacologic phenomena | Chemical, pharmacologic, and metabolic action and interaction of drugs. (12 Dec 1998) |
| psychological phenomena and processes | Mechanisms and underlying psychological principles of mental processes and their applications. (12 Dec 1998) |
| immunologic and biological factors | A collective grouping for biologically active substances that play a role in the functioning of the immune system and those that show biological or physiological activity. (12 Dec 1998) |
| cell-mediated immunity | <immunology> Immune response that involves effector T lymphocytes and not the production of humoral antibody. Responsible for allograft rejection, delayed hypersensitivity and in defence against viral infection and intracellular protozoan parasites. (26 Mar 1998) |
| biochemical phenomena | Biochemical functions, activities, and processes at organic and molecular levels in humans, animals, microorganisms, and plants. (12 Dec 1998) |
| microbiologic phenomena | Physiological processes and activities of microorganisms, including archaea, bacteria, rickettsia, viruses, protozoa, and fungi. (12 Dec 1998) |
| cooperative phenomena | <radiobiology> The effects of interacting particles acting collectively, rather than individually. Includes plasma oscillations, turbulence, and instabilities. (Plasmas are distinguished from collections of individual particles in that they exhibit cooperative phenomena in which the plasma participates as a unified entity.) Early fusion researchers who devised fusion schemes based upon theories where plasmas acted as merely a collection of individual particles (and therefore sought to confine only individual particles) often found themselves frustrated at the ability of plasma cooperative phenomena (such as magnetohydrodynamic instabilities) to thwart their efforts. (09 Oct 1997) |
| acquired immunity | <immunology> A form of cellular defense which identifies certain foreign substances (antigens) as harmful to the body. For this reason, the body can acquire resistance to a particular foreign agent. These foreign agents are then attacked by sensitised T lymphocytes (cellular immunity). White blood cells, plasma cells, B lymphocytes and other specialised immune system cells act in concert with T lymphocytes to produce antibodies (humoral immunity) that attach to the antigen directing T-cells to attack. Antibodies also stimulate the release of special chemical mediators in the blood (for example complement, interferon) that further enhance antigen destruction. (13 Nov 1997) |
| active immunity | <immunology> An organisms resistance to disease or infection, developed because the organisms immune system has produced antibodies after an infection or innoculation. (06 May 1997) |
| adoptive immunity | <immunology> Immunity to disease or infection conferred on a previously non-immune individual by transferring lymphocytes from a previously immune individual to the non-immune individual. (15 Jan 1998) |
| allograft immunity | <immunology> The recipient's immune system rejects tissue grafted from a genetically dissimilar donor (of the same species) and stages an immune attack against it. (09 Oct 1997) |
| antiviral immunity | Immunity resulting from virus infection, either naturally acquired or produced by intentional vaccination; compared to some bacterial immunity's, it is of relatively long duration, but this may be the result of infection-immunity rather than being peculiar to virus infection per se, since it occurs also in bacterial immunity after infections such as typhoid fever. (05 Mar 2000) |
| artificial active immunity | See: acquired immunity. (05 Mar 2000) |
| artificial passive immunity | See: acquired immunity. (05 Mar 2000) |