Different titration ratios of healthy donor-derived Vγ9Vδ2 T-cells, Vγ9Vδ2 T-cells treated with NKG2D blocker, activated αβ T-cells and naïve CD3 T-cells (or no T-cells and PAM-treated only as the controls) were added and incubated for 24 h, see Figure 2A, at effector/tumor (E/T) ratios of 0.1, 1, 10, and 20, respectively. Here, KLRK1 is linked to neoplasm.