Results: In general, the ECs in different arterial segments were fusiform, their long axis were consistent with the direction of the blood flow.

• 结果：在不同动脉段内皮细胞一般呈梭形，核区较隆起，长轴与血流的方向一致，有时可见桥样结构，但在不同的动脉段细胞隆凸程度不同。