CD274 and neoplasm: Of course, we observed an enhanced expression of PD‐1 on αβ‐ and γδ TIL and TAL; however, PD‐L1 was only expressed on KI‐OC‐1 tumor cells but not on KI‐OC‐11, KI‐OC‐12, and KI‐OC‐15 tumor cells (data not shown).