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Figure 8: Expressions of extracellular matrix key protein and TGF-β/Smad signaling pathway key protein in liver. Error bars indicate the standard deviation of three independent repeats. (a) Protein expressions of collagen I, p-Smad2, Smad2, p-Smad3, and Smad3. β-actin as loading controls. The gray density scanning analysis of (b) Collagen I, (c) p-Smad2/Smad2, and (d) p-Smad3/Smad3 by ImageJ software. DMN, dimethylnitrosamine; GA, gallic acid. p < 0.05, compared with the model group. #p < 0.05, compared with the control group.