endocardium

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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In 2 patients scar was intramural or epicardial with extension to the endocardium.

2位患者的瘢痕从心室壁或者心外膜延伸到心内膜.

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