plasmids introduced by transformation ranged in size from 4.4 to 23.2 kb and correlated with resistance to penicillin g , ampicillin , carbenicillin , cephalothin , cefoperazone , cefamandole , mezlocillin , piperacillin , and in some cases , tetracycline and kanamycin .
C0002680
ampicillin
C0025893
mezlocillin