the 50 % and 90 % mics were respectively : ticarcillin ( 32/greater than 1 024 ) , azlocillin ( 16/512 ) , piperacillin ( 8/512 ) , cefsulodin ( 4/128 ) , ceftazidime ( 2/8 ) , aztreonam ( 4/16 ) , imipenem ( 2/4 ) , nalidixic acid ( 128/256 ) , pefloxacin ( 1/8 ) , norfloxacin ( 1/8 ) , ofloxacin ( 2/8 ) , ciprofloxacin ( 0.25/2 ) , gentamicin ( 8/256 ) , sisomicin ( 4/256 ) , tobramycin ( 2/128 ) dibekacin ( 4/256 ) , netilmicin ( 16/256 ) , amikacin ( 8/16 ) .
C0017436
gentamicin
C0037209
sisomicin