单词 | streptonigrin |
释义 | strep·to·ni·grin ![]() n. A highly toxic antibiotic, C25H22N4O8, produced by an actinomycete (Streptomyces flocculus) and active against various types of tumors. [STREPTO- + Latin niger, nigr-, black; see nekw-t- in the Appendix of Indo-European roots + -IN.] |
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