a) Evaluation of liver regeneration by liver to body weight ratio under different treatments at 24 h after partial liver resection. Data represent mean ± SD, n = 6; *p < 0.05, **p < 0.01. b) Serum levels of AST and bilirubin in different groups at 24 h after partial liver resection. Data represent mean ± SD, n = 6; *p < 0.05, **p < 0.01. c) Western blot analysis of PCNA and Cyclin D1 for cell proliferation in different groups at 24 h after partial liver resection. Data represent mean ± SD, n = 6; *p < 0.05, **p < 0.01. d) Immuno-histochemical staining of Ki67, PCNA and Cyclin D1 in liver tissues under different treatments at 24 h after partial liver resection. Scale bar: 50 μm. e) Percentage of Ki67-, PCNA- and Cyclin D1-positive cells in each group at 24 h after partial liver resection. Data represent mean ± SD, n = 6; *p < 0.05, **p < 0.01.