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(A) β-Galactosidase activities from mxiC-lacZ fusion plasmid pJM1718. Bars indicate strains carrying ME2526 (cpxA::mini-Tn10), ME2824 (cpxA), HW1273 (Wt), ME2824/pJM0329, and CC118 as a negative control (N/C). Error bars indicate standard deviations. (B) Western blotting for InvE and IpaB proteins in E. coli cpxA (ME2824) and wild-type (HW1273) strains. The lowest band is a cross-reacting irrelevant protein detected by the InvE polyclonal antibody as a loading control (L/C).
