the monoclonal antibodies analyzed in this study define epitopes described by polyclonal antisera ( type antigens iv , v , and vi ) , define a hitherto uncharacterized epitope ( group antigen 1 ) , and finally identify new epitopes in what has previously been considered as one epitope ( group antigen 3,4 and type antigen iv ) .
C0003316
epitope
C0003320
antigen