KLRK1 and acute myeloid leukemia: Lower frequencies of NKG2D+ γδ (median: 27.90%), NKG2D+ Vδ1 (median: 19.50%), and NKG2D+ Vδ2 (median: 22.50%) in the AML-DN group were found compared with those in HIs and the CR group (Figure 2C; Supplementary Figure S2).