homologous antigen

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Related to homologous antigen: antigenic specificity, heterologous antigen

ho·mol·o·gous an·ti·gen

the specific antigen that generates the formation of an antibody that in turn can react with that antigen.
References in periodicals archive ?
Use of recombinant-derived homologous antigens, which has preceded the isolation of the virus in cell culture, should improve the sensitivity and specificity of results obtained with available heterologous antigens.
The patient serum collected on day 20 showed complete absorption by the homologous antigen, the purified R.