in general , antibodies reactive with epitopes of gc were protective at the lowest antibody doses , antibodies specific for gb were less efficient in providing immunity , and antibodies against gd were the least effective . mar mutants with single epitope changes in gc and multiple epitope changes in gb showed highly reduced pathogenicity , requiring up to 5 x 10 ( 6 ) pfu to kill 50 % of infected animals .
C0003241
antibodies
C0003250
mar