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Medical Definition of Coagglutination
1. Coagglutination is similar to the latex agglutination technique for detecting antigen (described above). Protein A, a uniformly distributed cell wall component of Staphylococcus aureus, is able to bind to the Fc region of most IgG isotype antibodies leaving the Fab region free to interact with antigens present in the applied specimens. The visible agglutination of the S. Aureus particles indicates the antigen-antibody reaction. (05 Mar 2000)