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Figure 4: Melatonin alleviated mitochondrial oxidative stress via the SIRT3/SOD2 signaling pathway. (a–c) Western blot of SIRT3, Ac-SOD2, and SOD2 ( per group, and vs. the control group, # and ## vs. the H2O2 group). (d–f) Immunostaining of SIRT3 and SOD2 ( per group, and ).