Figure 1. PSMC2 was upregulated in CCA tissues and abundantly expressed in CCA cells. (A) The expression level of PSMC2 was detected by IHC analysis in CCA tissues and normal tissues (scale bar = 50 μm). (B) The endogenous expression of PSMC2 in CCA cell lines including HUCCT1, QBC939, RBE and HCCC-9810 was evaluated by qPCR. Data was shown as mean ± SD. *P < 0.05, **P < 0.01, ***P < 0.001.