CD4 and infection: Interestingly, the absolute numbers of IL-10-producing CD4+ cells in infected TSLPR−/− mice were higher than those from WT mice on day 45 (Figures S3C,F in Supplementary Material), and this could be explained by the higher hepatosplenomegaly observed during the late stage of infection (see Figures 1D,E) in TSLPR−/− mice.