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• n  a polypeptide antibiotic of known chemical structure effective against several types of Gram-positive organisms; usually applied locally

• A plastic adhesive bandage impregnated with streptomycin, polymyxin and bacitracin is being test-marketed by Multibiotics Corp.
• By large, they report, any two of four antibiotics in Group Ipenicillin, streptomycin, bacitracin and neomycinwork well together.
• Meanwhile, another group of doctors tried neomycin combined with bacitracin on babies.