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Hydrogen peroxide activates RLM1 reporter in a dose-dependent manner. Wild-type strain (EY957) transformed with px2RLM1 was plated in 24-well plates on media containing the β-galactosidase substrate CPRG as described in Materials and Methods. Hydrogen peroxide was added to the media in increasing concentrations (0.1–1 mM), and β-galactosidase activity was measured at 570 nm after 24 h. Results shown are from five independent assays.
