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Microorganism MIC50
(μg/ml)		 MIC90
(μg/ml)		 Range
(μg/ml)		 Antimicrobial Reference
Streptococci (Viridans group + penicillin-intermediate) 0.3 0.5 0.12 － 0.5 Vancomycin (Vancocyn, Lyphocin) 43
Streptococci (Viridans group + penicillin-intermediate) 0.5 1 ? － ? Vancomycin (Vancocyn, Lyphocin) 39