the development of resistance acquired in vitro to 5 semi-synthetic penicillins : carbenicillin , ticarcillin , azlocillin , mezlocillin , piperacillin and to 5 cephalosporins : cefotaxime , cefoperazone , moxalactam , cefsulodin and ceftazidime , was compared in 6 strains of pseudomonas aeruginosa .
C3536856
cephalosporins
C0007559
ceftazidime