Specificity
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The reactivity of the antiserum is restricted to an subclass specific determinant on IgA2 as tested in haemagglutination, haemagglutination inhibition, direct binding enzyme immunoassay, competitive inhibition enzyme immunoassay, immunoblotting, immunoprecipitation, latex agglu-tination assay and histochemistry (Results of an IUIS/WHO collaborative study, Mestecky J. et al. (1996) J. Immunol. Methods 193, 103-148). Tetramethylrhodamine isothiocyanate-conjugated purified monoclonal mouse antibody to human IgA2, subclass specific
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