the resistance frequency was highest for ceftriaxone , cefotaxime , cefoperazone and piperacillin ( up to 2 x 10 ( -4 ) ) and lowest for ticarcillin , latamoxef , ceftazidime , aztreonam and imipenem ( less than 10 ( -8 ) ) .
C0007561
ceftriaxone
C0007554
cefotaxime