The internal elastic membrane changed progressively with fetal development.

内弹性膜随胎龄增厚、增长、弯曲，有一系列形态变化。

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RCCA is treated by super low temperature. The result shows that VEC of RCCA is removed completely, without the damage of the internal elastic membrane of RCCA.

本研究以兔颈总动脉(RCCA)为材料，采用超低温方法处理RCCA，结果显示此法能够完全去除兔血管内皮细胞层，且血管内弹性膜毫无损伤。

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