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Nanaomycin-producing strain “Streptomyces rosa subsp. notoensis” OS-3966 and new analogs discovered by PC screening from a culture broth. (a) Scanning electron micrograph of aerial spore chain of “S. rosa subsp. notoensis” OS-3966 grown on agar medium; (b) Nanaomycins A–E discovered as antibacterial and antifungal substances during 1974–1979; (c) New analogs (F–H) discovered from the culture broth via PC screening.
