Six days following C. jejuni WT strain infection, gnotobiotic IL-10−/− mice displayed a multifold increase of apoptotic cells, neutrophils, macrophages and monocytes, B and T lymphocytes as well as regulatory T cells (Treg) in the colonic mucosa and lamina propria (p < 0.001−0.0001 as compared to naive control animals; Figure 3). The gene discussed is IL10; the disease is infection.