| abstract |
Kind Code: A1 A fusion protein suitable as a test antigen in detecting pathogen infection, particularly primary infection of a pathogen, and a method for detecting and differentially determining antibodies generated by infection with pathogenic organisms, particularly IgM antibodies. provide. For detection and differential measurement of IgM antibodies, multiple antigens of multimeric test antigens having an effective epitope density consisting of a plurality of epitope copies to which the antibody to be detected can bind are used. [Selection figure] None |