Elevated levels of total flux (Fig. 3B) and radiance (Fig. 3C) were observed through day 6 post-infection in WT B6 mice and through day 8 in C3 KO mice infected with the Ig::Tn strain, suggesting that C3 KO mice exhibited delayed clearance of infection compared to WT B6 mice. The gene discussed is C3; the disease is infection.