metronidazole was the most active ( mic for 90 % of the isolates [ mic90 ] , 0.5 microgram/ml ) , followed by the carbapenems ( sch 34343 , 4 micrograms/ml ; imipenem , 8 micrograms/ml ) and the antipseudomonas penicillins ( piperacillin , 8 micrograms/ml ; ticarcillin , 32 micrograms/ml ; carbenicillin , 32 micrograms/ml ) .
C0030842
penicillins
C0006976
carbenicillin