the interaction of type i beta-lactamases with diverse beta-lactam compounds representing cephalosporins , cephamycins , penicillins , penams , penems , carbapenems , monobactams , and clavams was examined by using various enterobacteriaceae and pseudomonas aeruginosa as sources of the enzymes .
C3536856
cephalosporins
C0007736
cephamycins