Figure 1

Pathological changes in lung tissue and the levels of TGF-β in BALF and serum during the development of early pulmonary fibrosis HE staining (a) and Masson staining (c) of lung tissue in an animal model of early pulmonary fibrosis. The lung injury score (b) and pulmonary fibrosis score (d). The levels of TGF-β in BALF (e) and serum (f) in an animal model of early pulmonary fibrosis were quantified by ELISA. All data are expressed as the mean±s.d. from at least three replicate experiments. *P<0.05 and **P<0.01 vs the control group.