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Expression of patA and patB and accumulation of ethidium bromide in M184 and R6M184 transformants. (A) Expression of patA (black bars) and patB (gray bars) relative to that of rpoB. (B) Accumulation of ethidium bromide after 10 min of incubation with 100 μM ethidium bromide. *, accumulation significantly lower than that of R6 (P < 0.05).
