IFNG and neoplasm: Restoration or increased IFN-γ secretion and NK cell-mediated cytotoxicity were seen in tumor-bearing mice injected with sNK cells alone or anti-PD1 alone, and both of these functions were further increased with the combination of sNK cells and anti-PD1 antibody injection in tumor bearing mice (Figures 7E–H, S9, S10).