A circulating antibody that functions in the precipitation of homologous antigen.
An antibody which reacts to an antigen and forms a precipitate, used in many diagnostic tests.
Antibody that combines with its antigen to form a complex that settles out of solution as a precipitate. This reaction is used to identify an unknown antigen or to establish the presence of antibodies to a known antigen.
Antibodies that are capable of reacting with specific soluble antigens to cause precipitation (clumping).
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.
An antibody that combines with an antigen and forms the immune complex as a precipitate. The reaction is used in some diagnostic serological tests to identify antigens in the serum.
An antibody formed in the serum of an animal owing to the presence of a soluble antigen, usually a protein. When added to a solution of the antigen, it brings about precipitation. The injected protein is called the antigen, and the antibody produced is the precipitin. It was originally thought that these antibodies were members of a unique class, but most antibodies are capable of precipitating when combined with their antigens.
An immunoglobulin that instigates the aggregation of soluble antigens, leading to their separation from a solution.
An antibody targeting a soluble antigen. A precipitate is created when the soluble antigen is combined with the antibody.