NCR^dullAML-NK cell killing of leukemia-derived DCs. NCR^dull AML-NK cells were obtained and amplified as described in “Study design” and assessed for spontaneous cytolytic activity against autologous (A) or allogeneic (B) iDCs (▴) and mDCs (•). These data are from 1 experiment of 3 representative and independent performed. Error bars indicate ± standard deviation (SD). E/T indicates effector-target ratio.