Expression of NKp46, NKp30, NKG2D, NKp80, and NKG2A on purified NK cells from macaques. Cross-reactivity of mAbs specific to human NKp46, NKp30, NKG2D, NKp80, and NKG2D on CD16^pos freshly purified NK cells (open histograms) from a representative example of a human donor (left column), and of rhesus (middle column) and pigtailed (right column) macaques. Gray shaded histograms represent the negative controls stained with the second reagent alone. The level of surface expression of the relevant receptors is indicated as absolute percentage and as mean fluorescence intensity (MF) in each histogram plot.