AIM:To investigate the roles of nitric oxide (NO) and endothelin-1(ET-1) in regulation of coronary vascular reserve (CVR) during hypoxia.

• 目的 :探讨一氧化氮和内皮素 - 1对低氧时冠状血管储备 (CVR)变化的调节作用。 方法 :大鼠随机分为 3组 :(1)平原对照组 ;