CD274 and neoplasm: The Vγ2Vδ2 T cell-mediated killing percentages of allogeneic PBMCs were low even in the presence of Vγ2 x PD-L1, indicating the Vγ2 x PD-L1 activated Vγ2Vδ2 T cells’ killing activity was indeed restricted to tumor cells (Figure 6E).