TABLE 2.

The minimal inhibitory concentrations of mutants derived from BAA894 cultured in pH 7.0 and pH 5.0.

Strain	pH	Polymyxin B MIC (μg/mL)	Polymyxin E MIC (μg/mL)
C. sakazakii	pH 7.0	0.390.1	0.450.1
	pH 5.0	17.52.5	352.5
C. sakazakiiΔpmrA	pH 7.0	0.390.1	0.450.1
	pH 5.0	6.51.0	4.01.0
BAA894/pWSK29-pmrAB	pH7.0	0.390.1	0.450.1
	pH5.0	28020	56035
C. sakazakiiΔpmrA	pH7.0	0.390.1	0.450.1
complemented	pH5.0	17.52.5	352.5

The values represent the mean ± SD of results from three independent experiments.