Purpose To observe changes of lung epithelial permeability (LEP) and effects of glucocorticosteroid (GC) on it in bleomycin(BM)-induced pulmonary fibrosis rats.

• 目的观察博莱霉素(BM)致肺间质纤维化大鼠肺泡上皮通透性(LEP)的改变及糖皮质类固醇(GC)对其的影响。