Altered immunoglobulin production in p110γKOδD910A mice. (A) Ig isotype level. (B) IgG1/IgG2a ratio and (C) IgE level in serum taken from WT and p110γKOδD910A mice at 9 to 10 weeks of age. Each dot represents one individual mouse (representative of at least 3 experiments). Horizontal lines indicate mean value of each group.