[Heterophile antibodies to the antigens of myocardial interstitial connective tissue and erythrocytes in animals of different species].

Reactions of heterophilic antibodies with antigens of the interstitial connective tissue (ICT) of the myocardium of different animals were studied and compared. The reactions were identical on bovine, pig, sheep and rabbit myocardium. The heterophilic antigen of the ICT of bovine myocardium was also found on bovine, rabbit and rat red cells and was absent on sheep red blood cells. It is suggested that heterophilic antigen of the ICT of the bovine myocardium is a novel heterophilic antigen, the specificity of which is linked with D-galactose and which differs from antigens of other heterophilic systems.