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Exercise increases cardiomyocyte cell size and formation of new cardiomyocytes. Exercise increases cardiomyocyte cell size as determined by Wheat Germ Lectin (WGA) staining (A) and induces formation of new cardiomyocytes as determined by EdU staining (B), scale bar = 20 μm, n = 5. Compared to controls, *P < 0.05.
