Figure 3From: Matrix metalloproteinase 9 contributes to gut microbe homeostasis in a model of infectious colitisMMP-9 expression is increased with C. rodentium infection. Immunohistochemistry shows that MMP-9 distributed throughout the crypts (green) in uninfected WT mice is localized primarily to the apical surface of intestinal epithelium in C. rodentium-infected (10d) WT mice. Scale bar, 100 μm.Back to article page