Table 3.

In vitro susceptibility to various β-lactams ofE. coli DH5α(pLLB-8AI), which contains the clonedbla FEZ-1 determinant, and of E. coliDH5α carrying the empty vector

β-LactamMIC (μg/ml) for:
DH5α(pLLB-8AI)DH5α(pACYC184)
Ampicillin22
Carbenicillin44
Piperacillin11
Cephalothin324
Cefoxitin322
Cefuroxime324
Cefotaxime40.06
Ceftazidime0.500.12
Imipenem0.250.12
Meropenem0.250.03
Aztreonam0.120.12