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Representative images of Crossman’s trichrome (A), Mallory’s triple stain (B), Periodic Acid Schiff–Alcian Blue at pH 2.5 (PAS–AB 2.5) (C) and Masson’s trichrome (D) histochemical staining emphasizing the intricate network underneath the intestinal epithelium in the distal intestine (arrow). Scale bar 50 µm.
