应用鞣酸－醋酸铀组化电镜染色方法观察２５例Ｓｐｒａｇｕｅ－Ｄａｗｌｅｙ大鼠腺泡内肺动脉壁弹力纤维在缺氧条件下超微结构的改变。观察结果表明，此染色法操作简便、效果稳定、特异性较高，能选择性地使弹力纤维中的无定形物质的电子密度明显增加，但其微纤维成分、胶原纤维、基底膜等间质以及细胞核、细胞器等结构的电子密度均无改变，有利于对弹力纤维性病变进行观察。 The changes of ultrastructure of pulmonary artery wall elastic fibers in 25 cases of Sprague-Dawley rats under hypoxia were observed with tannin-uranium acetate staining electron microscopy. The results show that the staining method is simple, stable and specific, and can selectively increase the electron density of amorphous materials in elastic fibers. However, the micro-fiber composition, collagen fibers, basement membrane and other interstitial As well as the electron density of the nucleus, organelles and other structures were not changed, is conducive to the observation of elastic fibrous lesions.