ring test

ring test
ring test n a test for antigens or antibodies in which a layer of diluted material suspected of containing antigen is placed over a column of known antiserum in a small test tube or a layer of diluted known antigen is placed over serum suspected of containing antibodies and is then examined for a positive reaction signaled by formation of a thin plane or ring of precipitate

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ring precipitation test, ring precipitin test a type of precipitin test in which a solution containing antigen is carefully layered over a solution of antibody in a test tube; if the antigen and antibody are specific for one another, a precipitin reaction will happen and a ring of precipitate will form on the surface where the two solutions meet.

Medical dictionary. 2011.

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