streptonigrin

[ strĕp′tə-nīgrĭn ]

n.

A highly toxic antibiotic produced by a species of the genus Streptomyces and active against various tumors.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.