Expression of NK cell surface markers. Analysis of NK cells from whole blood using the gating strategy described in Figure 2. Shown are percent positive of CD56⁺CD3⁻ NK cells for each GATA2-deficient patient and corresponding healthy donor controls with each point representing the value from a single subject. The large horizontal bar denotes the mean and the vertical bar demonstrates the standard deviation. Excluded from analysis are those patients with <1% of NK cells in peripheral blood.