MUS81 and hepatocellular carcinoma: To determine the impact of Mus81 knockdown on the chemotherapy sensitivity of HCC cells, MTT assay was carried out and the results were analyzed by GraphPad Prism 5.0 software to establish the dose‐inhibition efficiency curves and calculate the IC50 of EPI, 5‐FU, MMC, and cisplatin to different HCC cells.