[Thermo-stable tumor-associated antigens in the serum of tumor-bearing animals and in tissue cultures of malignant tumors].

Gel precipitation and immunoelectrophoresis have demonstrated the presence of thermostable tumour-associated antigens in blood serum from tumour-bearing rats and culture supernatant of malignant cells. These antigens have the electrophoretic mobility in the zones of beta-, alpha- and alpha 1-globulins.