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Sensitivity of P. gingivalis W83, FLL455, and FLL456 to H2O2 stress. P. gingivalis strains were grown anaerobically to early exponential phase in BHI broth at 37°C, H2O2 was added to the cultures, and the cultures further incubated for 24 h. Each experiment was done in triplicate. The error bars show standard deviations.
