sera collected at 6-month intervals for 2 years ( visit 1-5 ) from 39 persons who seroconverted by enzyme-linked immunosorbent assay ( elisa ) 6 months ( visit 2 ) after enrollment were examined for isotype-specific western blot reactivity , neutralizing antibodies ( na ) against two divergent strains of hiv-1 ( hiv-1iiib and hiv-1rf ) , and for antibodies capable of participating in antibody-dependent , cell-mediated cytotoxicity ( adcc ) .
C0021017
isotype
C0003241
antibodies