[Molecular heterogeneity of blood and liver catalase rats with tumors].

By the method of gel-chromatography on sefadex G-200 and electrophoresis in polyacrylamid gel molecular forms of blood and liver catalase were isolated in rats with transplantable Pliss lymphosarcoma. Under study were changes in microheterogeneity of the enzyme, its activity and kinetic parameters in the kinetics of tumor growth. Quantitative and qualitative changes in the parameters under investigation were found already on the second day after tumor transplantation. These changes are enhanced with tumor progression.