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Formation of reactive oxygen species. Abbreviations: SOD = superoxide dismutase; MPO = myeloperoxidase; O2 = oxygen; 1O2 = singlet oxygen; O2●− = superoxide; H2O2 = hydrogen peroxide; ●OH = hydroxyl radical; HOCl = hypochlorous acid; and hν = radiation. ROS colored in red are free oxygen radicals.
