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Effect of treadmill exercise on caspase-3 expression in the retinas. Upper: Photomicrographs of caspase-3-positive cells in the retina. The scale bar represents 400 μm. Lower: Number of caspase-3-positive cells in each group. (A) Control group, (B) STZ-induced diabetes group, (C) STZ-induced diabetes and treadmill exercise group. The data are represented as the mean ± SEM. *means P< 0.05 compared to the control group. #means P< 0.05 compared to the STZ-induced diabetes group.
