Using isolated arterial rings from different parts of rats, effects of simulated microgravity on vascular responsiveness were examined in vitro.
利用离体动脉血管环，比较模拟失重对大鼠不同部位动脉血管反应性的影响。
Objective To observe the effects and mechanism of protamine on contractility of isolated human pulmonary artery rings.
目的研究鱼精蛋白对离体人肺动脉收缩功能的影响并探讨其可能的发生机制。
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