Fig. 4

Micrographs of the lung (A) in CTL (a), Db (b); Ex (c); Db + Ex (d) groups. Comparison of fibrosis score in the lung tissue of different groups illustrated in figure (B). (Magnifcation:×40, scale bar: 40 μm).Black arrows indicate fibrotic areas. Data are means ± SEM .*** P < 0.001 compared to the CTL.### P < 0.001 compared to the Db