假手术组仅进行右侧颈总动脉分离术而不作结扎及缺氧处理。PVL模型组大鼠行右侧颈总动脉结扎后吸入含6％氧气和94％氮气的氧氮混合气体，处理4小时，建立新生大鼠PVL模型。

Rats in the PVL model group were subjected to the ligation of right carotid artery, and then they were kept in a box with 6% oxygen and 94% nitrogen for 4 hours to establish the PVL animal model.

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结扎并低氧处理7日龄大鼠右侧颈总动脉制备半球性脑缺血损伤模型。

The animal models of cerebral hypoxia-ischemia were prepared in 7 days old rats by systemic hypoxia for 2h and right common carotid artery ligation.

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