Figure 1.

Histological changes in F2, F3 and F4 stage (× 200) using Massion's trichrome stain. (a) Increasing degeneration of liver cells, some fatty change of liver cells were observed in F2 stage; (b) Widespread changes in fatty cells and some fiber lesions (blue stained) in F3 stage; (c) Pseudo-lobule evident in F4 stage.