Table 2.

Determination of the MIC of ciprofloxacin in different transformants with respect to the parental strains.

Strains	MIC to Ciprofloxacin (mg/L) a
P3M	1
P3M-Δ2A	0.5
P3M-Δ2B	0.125
P3M-Δ2AΔ2B	0.125
E. coli DH5α-2A2B	0.125
E. coli DH5α-2B	0.06
E. coli DH5α-2A	0.03
E. coli DH5α	0.03

^a All MIC determinations were performed by broth microdilution assays according to CLSI standards.