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H2O2challenge assay of UA159, lytS and lrgAB mutants. Cultures of UA159, lytS, and lrgAB mutants (n = 6 biological replicates per strain) were grown in the presence (open symbols) and absence (filled symbols) of 1.0 mM H2O2 for 20 h at 37°C (aerobic atmosphere) in a Biotek microplate reader. OD600 measurements of each well were recorded at 2 h intervals. Black circles represent UA159, red triangles represent lytS mutant, blue squares represent lrgAB mutant. Error bars represent SEM.
