The endocardium is smooth, beneath which can be seen a red-brown myocardium.

光滑的心内膜下面是红棕色的心肌。

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The endocardium is smooth, beneath which can be seen a red - brown myocardium .

光滑的心内膜下面是红棕色的心肌。

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The endocardium is smooth, beneath which can be seen a red - brown myocardium .

光滑的心内膜下面是红棕色的心肌。

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