[Bleomycetin antitumor activity in relation to solid mouse tumors]

The antitumor activity of bleomycetin or bleomycin A5 was studied with respect to sarcoma 180, Garding-Passey melanoma, cervical carcinoma CC-5 and lymphosarcoma L10-1. Bleomycetin showed a high selective effect on the solid form of sarcoma 180. Its activity against Garding-Passeys melanoma and cervical carcinoma CC-5 was lower. Lymphosarcoma L10-1 was most resistant to bleomycetin. The intravenous route of bleomycin administration had no advantages over subcutaneous administration of the antibiotic.