英语语法分析

To set up the cerebral ischemic model, we retrogradely catheterized the external carotid artery, temporarily clipped the common carotid artery, then injected the autocoagnlated clot.

缺血组采用颈外动脉逆行置管，暂时夹闭颈总动脉，由导管内注入自体血凝块，建立脑缺血模型。