Since C. jejuni strains express the conserved major fibronectin-binding protein CadF [15,17,18,20] and because fibronectin is the natural ligand for integrin-β1 receptor [59,60], our current findings indicate a cascade of fibronectin→integrin-β1→FAK/Src-dependent signaling events occurring during infection. The gene discussed is SRC; the disease is infection.