antibody specific theory

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• Antibody — Immunoglobulin redirects here. For the immunoglobulin family, see Immunoglobulin superfamily. Antibodies redirects here. For the film, see Antibodies (film). Each antibody binds to a specific antigen; an interaction similar to a lock and key. An… …   Wikipedia

• theory — A reasoned explanation of known facts or phenomena that serves as a basis of investigation by which to seek the truth. SEE ALSO: hypothesis, postulate. [G. theoria, a beholding, speculation, t., fr. theoros, a beholder] adsorption t. of narcosis… …   Medical dictionary

• antibody — An immunoglobulin molecule produced by B lymphoid cells with a specific amino acid sequence evoked in humans or other animals by an antigen (immunogen). These molecules are characterized by reacting specifically with the antigen in some… …   Medical dictionary

• clonal selection theory — a modification of the natural selection theory (q.v.): there are in each adult several million clones of antibody producing cells, each programmed to make antibody of a single specificity and bearing cell surface receptors capable of reacting… …   Medical dictionary

• instructive theory — Theory of antibody production, now considered untenable, in which antigen acted as template for the production of specific antibody as opposed to the clonal selectiontheory in which pre existing variation occurs and appropriate clones are… …   Dictionary of molecular biology

• Anti-neutrophil cytoplasmic antibody — Anti neutrophil cytoplasmic antibodies (ANCAs) are a group of mainly IgG antibodies against antigens in the cytoplasm of neutrophil granulocytes (the most common type of white blood cell) and monocytes. They are detected as a blood test in a… …   Wikipedia

• Ehrlich's theory — Ehrlich s side chain theory the first (1896) comprehensive theory of antibody production, which proposed that antibody producing cells have surface molecules (side chains) that can bind to antigens and that binding to a specific side chain causes …   Medical dictionary

• template theory — a theory of the mechanism of antibody specificity, current during the 1930s and 40s, which proposed that the shape of an antibody molecule is determined as it is synthesized by being molded on an antigen molecule. The antigen thus “instructs” …   Medical dictionary

• inhibition — 1. Depression or arrest of a function. SEE ALSO: inhibitor. 2. In psychoanalysis, the restraining of instinctual or unconscious drives or tendencies, especially if they conflict with one s conscience or with societal demands. 3. In psychology, a… …   Medical dictionary

• Burnet, Sir Macfarlane — ▪ Australian physician in full  Sir Frank Macfarlane Burnet  born Sept. 3, 1899, Traralgon, Australia died Aug. 31, 1985, Melbourne       Australian physician, immunologist, and virologist who, with Sir Peter Medawar (Medawar, Sir Peter B.), was… …   Universalium

• Immune system — A scanning electron microscope image of a single neutrophil (yellow), engulfing anthrax bacteria (orange). An immune system is a system of biological structures and processes within an organism that protects against disease by identifying and… …   Wikipedia