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Microorganism MIC50
(μg/ml)		 MIC90
(μg/ml)		 Range
(μg/ml)		 Antimicrobial Reference
Streptococci (Viridans group + penicillin-resistant) 0.25 0.25 0.06 － 0.25 Sparfloxacin (AT-4140, Zagam) 117
Streptococci (Viridans group + penicillin-resistant) 0.25 0.5 0.25 － 0.5 Sparfloxacin (AT-4140, Zagam) 374