Inoculation with S. aureus resulted in rapid neutrophil infiltration into the hepatic sinusoid of both the WT mice and TLR2-deficient mice within the first 6 h post-infection; at 2 d post-infection, an increase in macrophages was noted in the livers of the 2 mouse groups (Figure 7A, 7B). The gene discussed is TLR2; the disease is infection.