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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.
(Pharmacology) pharmacol any of the antibiotics that come from Streptomyces caespitosus
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|Noun||1.||mitomycin - a complex of antibiotic substances obtained from a streptomyces bacterium; one form (trade name Mutamycin) shows promise as an anticancer drug|