Co-culture with NDV-preinfected tumor cells resulted in increased proliferation, activation and IFN-γ production by JEDI CD8+ T cells (Fig. 1e and Supplementary Fig. 1d) and greatly enhanced tumor Ag-specific T cell killing, as seen by marked decrease in the GFP:mCherry cell ratio (Fig. 1e). Here, IFNG is linked to neoplasm.