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After the treatment of Bel-7402 cells with different concentrations of compound 1 for 48 h, ROS production were assayed by the fluorescence intensity of DCF with the enzyme-immunoassay instrument at an excitation wavelength of 485 nm and an emission wavelength of 535 nm. The data were represented as mean ± standard S.D for six independent experiments. * P < 0.05 and ** P < 0.01 vs. control.
