RNASE1 and neoplasm: Starting from day 4 after tumor implantation, the animals were assigned to three groups: 1 (C) —control injected i.m. with saline buffer; 2 and 3—injected i.m. with RNase A at the doses of 0.7 and 7 μg/kg, respectively, according to the scheme 5 + 2 for two weeks.