polymyxin b nonapeptide , a polymyxin b derivative which lacks the fatty acyl part and the bactericidal activity of polymyxin , was shown to sensitize smooth encapsulated escherichia coli ( o18 : k1 ) and smooth salmonella typhimurium to hydrophobic antibiotics ( novobiocin , fusidic acid , erythromycin , clindamycin , nafcillin , and cloxacillin ) .
C0032535
polymyxin b
C0032539
polymyxin