TNFSF10 and hepatocellular carcinoma: Results of MTT assay demonstrated that in a dose-dependent manner the combined treatment with Ad-ΔB/TRAIL+Ad-ΔB/IL-12 had resulted in potent killing effects on the tested Hep3B (Fig. 3a) and HuH7 (Fig. 3b) human HCC cell lines than those achieved by tretament with Ad-ΔB.