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Time-window response of the diameter of cardiomyocytes in left ventricle at 14 days after surgery. Representative sections are stained with HE (A). All figures are depicted at 400×magnification. The scale represents 50 μm. The shortest diameters of cardiomyocytes were measured by light microscopy (B). Each value represents the mean ± S.E.M. of number of animals in parentheses. **P < 0.01, compared with fistula.
