- An antibody that under suitable conditions combines with and causes its specific and soluble antigen to precipitate from solution. SYN: precipitating antibody.
* * *pre·cip·i·tin pri-'sip-ət-ən n any of various antibodies which form insoluble precipitates with specific antigens and some of which are used in serological testing
* * *n.any antibody that combines with its antigen to form a complex that comes out of solution and is seen as a precipitate. The antibody-antigen reaction is specific; the precipitin reaction is therefore a useful means of confirming the identity of an unknown antigen or establishing that a serum contains antibodies to a known disease. This test may be performed in watery solution or in a semisolid medium such as agar gel.see also agglutination.
* * *pre·cip·i·tin (pre-sipґĭ-tin) an antibody to antigen that specifically aggregates the macromolecular antigen in vivo or in vitro to give a visible precipitate.
Medical dictionary. 2011.
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precipitin — [prē sip′ə tin, prisip′ə tin] n. [ PRECIPIT(ATE) + IN1] an antibody produced in the blood of an animal injected with a soluble antigen: when the antigen is added to blood serum from such an animal, a precipitate forms … English World dictionary
Precipitin — A precipitin is an antibody which can precipitate out of a solution. The Precipitin Reaction The precipitin reaction provided the first quantitative assay for antibody but is now made redundant by current technology and diagnostic techniques such … Wikipedia
precipitin — Any antibody that forms a precipitating complex (a precipitin line) with an appropriate multivalent antigen. The term is now outmoded … Dictionary of molecular biology
precipitin — n. any antibody that combines with its antigen to form a complex that comes out of solution and is seen as a precipitate. The antibody antigen reaction is specific; the precipitin reaction is therefore a useful means of confirming the identity of … The new mediacal dictionary
precipitin — noun Etymology: International Scientific Vocabulary, from precipitate Date: 1900 an antibody that forms a precipitate when it unites with its antigen … New Collegiate Dictionary
precipitin — n. [L. praeceps, head long] A specific antibody developed in response to foreign protein in the blood … Dictionary of invertebrate zoology
precipitin — (pre sip ī tin) The antibody responsible for a precipitation reaction … Dictionary of microbiology
precipitin — /pri sip i tin/, n. Immunol. an antibody that reacts with its specific antigen to form an insoluble precipitate. [1895 1900; PRECIPIT(ATE) + IN2] * * * … Universalium
precipitin — noun any antibody which reacts with an antigen to form a precipitate … Wiktionary
precipitin — An antibody produced in the blood serum by inoculation with foreign protein and capable of providing immunity against specific bacteria … Forensic science glossary