precipitin

(redirected from Precipitins)
Also found in: Dictionary, Thesaurus, Encyclopedia.

precipitin

 [pre-sip´ĭ-tin]
an antibody to antigen that specifically aggregates the antigen in vivo or in vitro to give a visible precipitate.
precipitin reaction a reaction involving the specific serologic precipitation of an antigen in solution with its specific antiserum in the presence of electrolytes. The reaction is used in the typing of pneumococcus strains, in testing whether blood is human or animal, and for diagnostic purposes.
precipitin test any test in which the positive reaction consists of the formation and deposit of a precipitate in the fluid being tested. See also precipitin reaction.

pre·cip·i·tin

(prē-sip'i-tin),
An antibody that under suitable conditions combines with and causes its specific and soluble antigen to precipitate from solution.

precipitin

(prĭ-sĭp′ĭ-tĭn)
n.
An antibody that reacts with a specific soluble antigen to produce a precipitate.

pre·cip·i·tin

(prĕ-sip'i-tin)
An antibody that under suitable conditions combines with and causes its specific and soluble antigen to precipitate from solution.

precipitin

see ANTIBODY.

Precipitin

An antibody in blood that combines with an antigen to form a solid that separates from the rest of the blood.
References in periodicals archive ?
Presence of specific immunoglobulin G antibodies in serum against the identified agent (serum precipitins).
Transmission electron microscopy of the circumoval immune precipitin reaction on eggs.
1988 Schistosoma mansoni cationic egg antigens (CEF-6): Immunoserology with oxamniquine-treated patients and involvement of CEF6 in the circumoval precipitin reaction.
Precipitins in bird breeder's disease: how useful are they?
Key words: bird-breeder's lung, bird breeding, cockatiels, hypersensitivity pneumonitis, inspiratory squawk, lung, precipitin antibodies, respiratory sounds.
Serum precipitins to a standard commercial antigen panel (including bacteria, fungi, and avian proteins that have been associated with HP in other settings) were negative in the two workers who were tested.
Evaluations of two of the infants for allergies to cow's milk protein through quantification of milk precipitins were negative.
Multiple precipitins to cow's milk in chronic respiratory disease.