[Antineoplastic and toxic effects of blastolysin in the treatment of spontaneous mammary cancer in dogs].

The anticancer activity and toxicity of blastolysin were studied in 13 dogs with mammary cancer using two different schedules. The agent was given 5 times in a dose of 2.5-10 mg/kg with a 72 h interval (the first schedule) and 10 times in a dose of 0.4-1.7 mg/kg in 24 h (the second schedule). The first schedule exhibited the highest anticancer effect with the least toxicity. Blastolysin was found to depress erythropoiesis.