Methods: the cerebral ischemia model was made by the occlusion of the rat's bilateral carotid arteries.

方法：通过夹闭大鼠两侧颈总动脉，造成了大鼠急性脑缺血模型。

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Moyamoya disease is characterized by progressive stenosis or occlusion at the terminal portions of the bilateral internal carotid arteries with arterial collateral vessels at the base of the brain.

烟雾病是一种进行性双侧颈内动脉末端狭窄或闭塞并在脑基底部出现异常动脉血管网的疾病。

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Objective: to investigate the gene expression of nitric oxide synthase (NOS) and somatostatin (ss) in the cerebral cortex after occlusion of bilateral common carotid artery and reperfusion in rats.

目的：探讨脑缺血再灌注后大脑皮质一氧化氮合酶(NOS)和生长抑素(SS)的基因表达及其意义。

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