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Abstract
SUMMARY: A strain of Mucor ramannianus from Campine forest soil was found to secrete an antibiotic, for which the name Ramycin is proposed. It is especially active against Gram-positive micro-organisms and Myobacterium tuberculosis H37Rv, but sensitive organisms quickly acquire resistance to it. Although it is not very toxic, it possesses a necrotic action on tissues. Ramycin can protect mice against streptococcal and staphylococcal infections but not against H37Rv.
Ramycin crystallizes in orthorhombic plates. The new antibiotic is an optically-inactive unsaturated hydroxy acid, containing C, H and O only.
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© Society for General Microbiology, 1958