CX3CR1+ expression was observed after infection with adenovirus (AdOVA) or Listeria monocytogenes (L.m.-OVA) on OVA-specific memory CD8+ T cells and after LCMV infection on LCMV-gp33-specific memory CD8+ T cells (Supplementary Fig. 1F). The gene discussed is CX3CR1; the disease is infection.