mitomycin

Any of a group of antibiotics produced by the soil actinomycete Streptomyces caespitosus that inhibit DNA synthesis and are used against bacteria and cancerous tumor cells.

Any of a family of aziridine-containing natural products isolated from the filamentous bacterium Streptomyces lavendulae, one of which is used as a chemotherapeutic agent.

a complex of antibiotic substances obtained from a streptomyces bacterium; one form (trade name Mutamycin) shows promise as an anticancer drug