Figure 6

Ultrapathology of the colonic mucosa of the sensitized mice after challenge with OVA. Representative EM photomicrographs are taken from the colonic mucosa of the sensitized mice after challenge with OVA and show (A) epithelial cell (epi) necrosis (EN) and dilation of the blood vessel (BV) in the subepithelial region (×3,000); (B) epithelium destruction, basement membrane (BM) hyperplasia and blood vessel dilation (×2,000); (C) bacteria (arrows) adhering to and penetrating the epithelial cells (×3,000); (D) abscess (Ab) formation in subepithelial region with a colony of bacteria (arrows) and a red blood cell (RBC) in it (×2,000); (E) micro-ulcer (empty arrow) formation on the surface of colonic mucosa with bacteria (arrow) adherence (×2,500); (F) edema and blood vessel (BV) dilation in the lamina propria (LP) (×2,500).