mics of six beta-lactamase-stable compounds ( ceftazidime , ceftriaxone , cefamandole , cefoxitin , cefotaxime , cefuroxime ) were determined against all the beta-lactamase transferring bacteria and their respective transconjugants by a miniaturized dilution broth method . beta-lactamases produced by donors and transconjugants were purified and identified by determination of the isoelectric point by focusing ;
C0007561
ceftriaxone
C0007554
cefotaxime