By day 9 post infection the numbers of CD8+ T cells found in IL-10−/− livers were comparable to WT (Fig. 5D), whereas the numbers of macrophages, CD4+ T cells, and NK cells in these same IL-10−/− livers were still higher as compared to day 9 WT livers (Fig. 5, A–C). The gene discussed is IL10; the disease is infection.