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Myocardial apoptosis. Apoptotic nuclei were stained in brownish yellow, while normal nuclei were stained in blue. The typical apoptosis images (TUNEL, DAB; ×400 magnification; scale bar, 100 μm) were taken among different groups (a)–(d). Quantitative analysis of apoptotic rates (e). Values are expressed as mean ± SD (n = 7). **P < 0.01, versus control. ΔΔ P < 0.01, versus model.
