to determine the in vitro and in vivo activity of human antibody induced by different haemophilus influenzae type b ( hib ) vaccines , pooled human antisera obtained from adults immunized with either polyribosyl ribitol phosphate ( prp ) or prp-conjugated with diphtheria toxoid ( prp-d ) vaccines were evaluated for opsonic and protective activity against hib .
C0003241
antibody
C0020960
antisera