mitomycin

Medical Dictionary

mitomycin mi·to·my·cin (mī'tə-mī'sĭn)
n.
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.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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WordNet
mitomycin

noun
a complex of antibiotic substances obtained from a streptomyces bacterium; one form (trade name Mutamycin) shows promise as an anticancer drug 
WordNet® 3.0, © 2006 by Princeton University.
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