precipitin


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Related to precipitin: precipitin test

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 ?
Transmission electron microscopy of the circumoval immune precipitin reaction on eggs.
Alpha-1AG tests were ran by placing serum samples in Alpha-1AG test plates, letting them sit in a humidified box at room temperature for 24-48 hours, then measuring the precipitin ring with a plastic scale.
The double gel diffusion precipitin (Ouchterlony) test has been used for quite some time.
Since the introduction at the turn of the century of the precipitin test for the medico-legal identification of bloodstains, several new techniques have been introduced and critically reviewed (Culliford, 1964; Gaensslen, 1983).
However, we have been unable, using the precipitin test of Pickavance (1970), to identify the presence of C.
Both the capillary precipitin method (10) and the Strep-B-Latex rapid agglutination method (Statens Serum Institut, Copenhagen, Denmark) were used.
Occurrence of life threatening wheezing, laryngeal edema, or anaphylactic shock in stings were produced by a substance called precipitin. They are considered extremely rare [4].
In addition, incipient exogenous allergic alveolitis was suspected because of the presence of budgerigars and cockatiels in the boy's home and the finding of serum positivity for IgG precipitin. The boy's condition gradually improved with cefuroxime and clarythromycin treatment and oxygen therapy.
The blood meal source was identified by microscopic examination and precipitin technique using human antiserum as described earlier (11).
A positive antibody-antigen reaction was identified as precipitin lines formed between the serum and the protein preparations.