Table 1.

Antibiotic susceptibilities of E. coli strains and transformants used

IsolateMIC (μg/ml) by Etest on MH agar
AztreonamFOXCTXCAZCefpiromePiperacillin-tazobactamERTIMPMEM
EC405>256>256>256>256>256>256>32>32>32
TOP100.125160.0470.380.03540.0080.250.047
TOP10 pCR2.1 NDM-10.19240.125a2a0.25>2560.0120.380.032
TOP10 pCR2.1 NDM-50.125>25648>25616>2560.0160.250.032
TOP10 pCR2.1 P+NDM-10.125>256>256>256>256>256884
TOP10 pCR2.1 P+NDM-50.19>256>256>256>256>25632>3232
TOP10 pBAD P+NDM-10.125>25616>2566>2560.0640.50.064
TOP10 pBAD P+NDM-50.19>256>256>256>256>256461.5
  • a Colonies growing within the zone of inhibition.