these 4 preparations were cephalosporinase from enterobacter cloaceae 975 , oxacillinase from pseudomonas aeruginosa 10380 , carbenicillinase from pseudomonas aeruginosa 10538 and beta-lactamase of the tem type from enterobacter cloaceae 980 .
C0728805
cephalosporinase
C0597979
beta-lactamase