[Level of viral antibodies in normal and specific swine and bovine gamma globulin preparations].

Studied were 15 series of normal bovine gamma-globulin, 5 series of normal swine gamma-globulin, 7 series of Aujeszky gamma-globulin, 6 series of specific gamma-globulin against edema disease of pigs, 4 series of specific gamma-globulin against paratyphus, 5 series of Mixoglobulin-70, and one series of swine poly-globulin. All series of gamma-globulin preparations were studied for the presence of antibodies against Mixovirus parainfluenza-3 through the hemagglutinationinhibition reaction, antibodies against adenoviruses through the precipitation reaction in agar gel, and antibodies against the virus of Aujeszky's disease through the virus-neutralization reaction in tissue cultures.