in addition , different patterns of antitoxin antibody composition and toxin-neutralizing ability , characteristic of horse , rabbit and man were found : horse antitoxin sera contained all four kinds of antibodies and horse anti-gamma showed low toxin-neutralizing ability , while human antisera lacked anti-alpha and had anti-gamma with high neutralizing activity but contained anti-beta-1 with no detectable neutralizing activity .
C0003241
antibodies
C0020960
antisera