Expression of five candidate miRNAs in intrahepatic cholangiocarcinoma cell lines. miR/miRNA, microRNA; iRBE, invasive subpopulation of RBE cells; iHCCC-9810, invasive subpopulation of HCCC-9810 cells. NG, P>0.05; ***P<0.001; ****P<0.0001; all vs. expressions in non-invasive cell lines, respectively.