[Isolation of antibodies against species-specific M. bovis antigens]

Tuberculin PPD antibodies were isolated from hyperimmune rabbit serum by affinity chromatography. They were crossover depleted for elimination of antibodies specific to common (with atypical mycobacteria) antigens. Antibodies to M. bovis species-specific antigens may be used for preparing an immunosorbent and affinity chromatographically isolating the antigens from tuberculin PPD.