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已经证明白细胞三烯能够引起显著的支气管缩小。通过对一些健康志愿者的外周静脉血的白细胞三烯及血浆补体C_(3a)和C_(5a)的水平进行测量,发现吸烟后三者的水平明显提高,暗示补体激活引起白
Leukotrienes have been shown to cause significant bronchoconstriction. By measuring the levels of leukotrienes and plasma complement C_ (3a) and C_ (5a) in peripheral venous blood of some healthy volunteers, it was found that the levels of all three smoking significantly increased, suggesting that complement activation causes white