However, B6.Nlrc4–/– mice challenged with ΔospC3 S. flexneri were less susceptible to infection (Figure 3), exhibiting significantly less weight loss (Figure 3B), a >10-fold decrease in IEC colonization (Figure 3C), reduced cecum shrinkage (Figure 3D), and a decrease in CXCL1 (Figure 3F) relative to WT-infected B6.Nlrc4–/– mice. The gene discussed is CXCL1; the disease is infection.