Objective To explore the effect of down-regulating survivin expression by RNAi on growth suppression and promotion on apoptosis of human hepatocellular carcinoma cells,in order to supply an effective target and technique for liver cancer gene therapy.Methods The recombinant plasmid of pSU6-si-survivin was constructed,which was transfected into Bel7402 cells.Mock group,negative group and treated group were set up.Using MTT assay the proliferation of transfected cells was investigated,the survivin protein exp...