As shown in figure 5B, the splenic monocytes from the B16-bearing mice injected with NDV-MIP3α or NDV-WT did not kill CT26 cells, and the splenic monocytes from the CT26-bearing mice injected with NDV-MIP3α or NDV-WT did not kill B16 cells, suggesting that the CTL activity is tumor-specific. This evidence concerns the gene DDX53 and neoplasm.