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Effect of KI on Fenton reagent and H2O2/HRP killing of bacteria. S. aureus (A) or E. coli (B) (108 cells/ml) was incubated with the stated equimolar concentrations of H2O2 and FeSO4 with and without KI (10 mM) for 1 h. S. aureus (C) or E. coli (D) (108 cells/ml) bacteria were incubated with 10 mM H2O2 and different numbers of units (U) of HRP with and without KI (10 mM) for 1 h.
