Reduced Ly49G2 expression in NK cells in p110δ-deficient mice. (A) Lymphocytes were gated by forward and side scatters on freshly explanted splenocytes and further gated on NK1.1⁺CD3⁻ (boxes) for analysis of NK-cell receptor expression. The numbers within the quadrants represent percentages of NK cells. (B) Ly49G2 receptor expression on NK cells (dark lines). Gray lines represent isotype control staining. One representative of 4 mice per group is shown. The numbers above the brackets represent percentages of NK cells positive for Ly49G2.