complement fixation reaction

complement fixation reaction
see under fixation.

Medical dictionary. 2011.

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  • complement fixation — n the process of binding serum complement to the product formed by the union of an antibody and the antigen for which it is specific that occurs when complement is added to a mixture (in proper proportion) of such an antibody and antigen * * *… …   Medical dictionary

  • Complement fixation test — Diagnostics MeSH D003168 The complement fixation test is an immunological medical test that can be used to detect the presence of either specific antibody or specific ant …   Wikipedia

  • complement fixation — n. Immunology the fixing of complement into the product of an antigen antibody reaction: used as an infection indicator in certain serologic tests that measure the presence or absence of free, active complement …   English World dictionary

  • complement fixation — noun an immune response in which an antigen antibody combination inactivates a complement (so it is unavailable to participate in a second antigen antibody combination) • Hypernyms: ↑immune response, ↑immune reaction, ↑immunologic response * * *… …   Useful english dictionary

  • complement fixation — the binding of complement to the complex that is formed when an antibody reacts with a specific antigen. Because complement is taken up from the serum only when such a reaction has occurred, testing for the presence of complement after mixing a… …   The new mediacal dictionary

  • complement fixation test — noun a blood test in which a sample of serum is exposed to a particular antigen and complement in order to determine whether or not antibodies to that particular antigen are present; used as a diagnostic test • Hypernyms: ↑blood test • Hyponyms:… …   Useful english dictionary

  • Treponema pallidum complement fixation tests — nontreponemal antigen serologic tests for syphilis using complement fixation rather than flocculation as the indicator reaction. Once widely used to confirm positive results of flocculation procedures, they have now been replaced by treponemal… …   Medical dictionary

  • reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… …   Medical dictionary

  • COMPLÉMENT (immunologie) — Avec les anticorps, le complément représente l’élément essentiel du système humoral de défense contre les agents infectieux. Il se compose d’une vingtaine de protéines circulantes capables d’interagir avec certaines membranes biologiques.… …   Encyclopédie Universelle

  • Wassermann reaction — n the complement fixing reaction that occurs in a positive complement fixation test for syphilis using the serum of an infected individual * * * formerly, the most commonly used test for the diagnosis of syphilis. A sample of the patient s blood… …   Medical dictionary

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