A. Representative result of expression of TPD52 and p21 protein in the same four pairs HCC tissues and matched adjacent non-cancerous tissues (N, matched non-cancerous tissues; T, HCC tissues). B. Relative expression of TPD52 protein was lower in tumor tissues than in the matched adjacent non-tumor tissues (P = 0.039, n = 25). C. Relative expression of p21 protein was lower in tumor tissues than in the matched adjacent non-tumor tissues (P = 0.0024, n = 25). D. Result of expression of TPD52 and p21 protein in the same HCC cell lines and the normal LO2 liver cell line. E. TPD52 protein level was significantly lower in the Bel7402, HCCLM6, Hep3B, and HepG2 cells than in LO2 cell. F. p21 protein level was also significantly lower in the Bel7402, HCCLM6, Hep3B, and HepG2 cells than in LO2 cell.