the ability of passively administered antibody to suppress the immune response against homologous antigenic determinants while concomitantly enhancing the response against other unrelated determinants of the same antigen molecule has been established in two distinct antigen-antibody systems : ( a ) guinea pig gamma ( 2 ) -immunoglobulin + passive anti-f ( ab ' ) ( 2 ) antibody , where suppression of anti-f ( ab ' ) ( 2 ) antibody synthesis is accompanied by enhancement of the anti-fc response ;
C0021027
immunoglobulin
C0003241
antibody