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Effects of exercise training (ET) on muscle proliferation and apoptosis in 40‐week‐old mice. (A) Representative PCNA immunostaining with the mouse mAb used to assess the content of proliferated cells. (B,C) Quantitative data for PCNA‐positive cells. (E) Representative TUNEL staining used to assess the content of apoptotic cells. (F,G) Quantitative data for TUNEL‐positive cells. Data are mean ± SEM (n = 12–15). Arrowheads: related positive‐staining cells. Scale bar: 50 µm.
