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Ulcerative colitis. (A) Distorted crypt architecture, inflammation in the lamina propria and in the upper part of submucosa. (B) Immunohistochemistry for Snail and Slug: positive nuclear and cytoplasmic reaction for Snail and Slug in the crypt epithelium and some inflammatory cells. (C) Immunohistochemistry for E‐cadherin: positive membranous reaction in the crypt epithelium, with a focal decreased intensity of staining.
