The results showed that CD90-positive irradiated HepG2 cell-fused DC vaccine induced stronger IFN-γ-producing CTL-mediated cytotoxicity against CD90-positive HepG2 cell line in vitro and exhibited better efficacy in suppressing tumor growth in an ectopic xenograft immunocompromised BALB/c mouse model of non-CD90-sorted HepG2 cell line than non-CD90-sorted irradiated HepG2 cell-fused DC vaccine. This evidence concerns the gene THY1 and neoplasm.