the minimal inhibitory concentration ( mic ) of five penicillins ( carbenicillin , ticarcillin , mezlocillin , piperacillin and bay k 4999 ) against escherichia coli , pseudomonas aeruginosa , klebsiella pneumoniae , proteus mirabilis , indole positive proteus sp . and enterobacter species was determined by an agar dilution method .
C0030842
penicillins
C0006976
carbenicillin