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TRPA1 localization in CD patient intestine. (A) Immunostaining of TRPA1/α-SMA in nonstenosis and stenosis biopsy samples. (B) H&E-, MT-, and TRPA1–3,3′-diaminobenzidine tetra hydrochloride (DAB)–stained stenosis surgical tissue from a CD patient transverse colon. DAPI, 4′,6-diamidino-2-phenylindole. T. colon, transverse colon.
