KLRD1 and neoplasm: On day 16 postcell transfer, we noticed that P14 cells preferentially upregulate NKG2A/CD94 expression in B16F10‐GP tumor rather than B16F10‐OVA tumor or B16F10 tumor, whereas OT1 cells preferentially upregulate NKG2A/CD94 expression in B16F10‐OVA tumor rather than B16F10‐GP tumor or B16F10 tumor (Figure 3D,E).