IL10 and infection: We determined absolute numbers of IL10-producing B cells, T cells or non-B/T cells and found that IL10+ B cells are increased at baseline and B cells are the predominant IL10-producing cell type in PI3KCDGOF/B spleen and peritoneal cavity at day 4 post-infection; however, by day 7, increased IL10-producing T cells and non-T/B cells could also be observed in the spleens of mutant mice.