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Growth inhibition zones of E. coli defective in the indicated cysteine metabolism-related genes. Cells were grown in LB medium in the presence of paraquat (A), diamide (B), hydrogen peroxide (C), and potassium tellurite (D). Results for the parental, isogenic, wild-type BW25113 strain are shown to the right of each histogram. Error bars represent standard deviations (n = 6).
