| streptovaricin | <chemical> A complex of ansamycin antibiotics consisting of streptovaricins a, b, c, d, e, f, g, j, and k of which streptovaricin c is the major component. Pharmacological action: antibiotics, antibiotics, antineoplastic, antiviral agents. (12 Dec 1998) |
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| streptovaricins | Antibiotics that block initiation of transcription in prokaryotes. ( Compare:. Rifamycins and rifampicin). (18 Nov 1997) |