In the SILP, the percentage of CD8+ T cells, B cells and ILCs expressing IL-10 increased at day 7 (D7) post-infection with H. polygyrus compared to naïve controls, whereas the proportion of IL-10+ CD4+ T cells remained unchanged and there was a small decrease in IL-10+ myeloid cells (Fig. 1a–f). The gene discussed is CD4; the disease is infection.