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(A) Mechanism for ROS production through Fenton reaction cycle from molecular oxygen and ascorbate using copper. (B) Inhibition of copper-catalyzed ROS production through copper chelation via measuring the fluorescence intensity of 7-OH-CCA. (C) Bar diagram of fluorescence intensity of 7-OH-CCA after 1 h. Error bar corresponds to the SD of the value (**p ≤ 0.05).
