ET可能是导致血管收缩，引起先兆症状的重要因子。

ET might be the important factor to cause vasoconstriction, resulting in the portent symptoms.

youdao

结果表明，脑血流内皮舒张因子和内皮收缩因子之间的平衡紊乱是SAH后脑血管痉挛发生的机制之一。

It indicated that the imbalance of endothelium derived relaxing factor (NO) and the endothelium derived constricting factor (ET) was a major cause of vasospasm after SAH.

youdao

目的：观察血小板衍生生长因子-BB (PDGF - BB)对大鼠主动脉血管环的收缩作用。

AIM: to investigate the effects of platelet-derived growth factor BB (PDGF-BB) on vasoconstriction of the vascular vessels.

youdao

目的：观察血小板衍生生长因子-BB (PDGF - BB)对大鼠主动脉血管环的收缩作用。

AIM: to investigate the effects of platelet-derived growth factor BB (PDGF-BB) on vasoconstriction of the vascular vessels.

youdao