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Relative methyl viologen sensitivity. (A) Results of short-term methyl viologen exposure. (B) Results of long-term methyl viologen exposure (see Materials and Methods). The relative methyl viologen sensitivity was determined by comparing viabilities with and without treatment. Levels are shown as values relative to the survival level of the wild-type strain. All experiments were performed at least in duplicate. Error bars show two standard deviations of the data.
