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Representative TRX immunohistochemical staining patterns of UC regenerative mucosa by Matts classification. (A) Normal, (B) Matts 1, (C) Matts 2, (D) Matts 3, (E) Matts 4, (F) Matts 5. (a) Low magnification (×100). (b) A higher magnification (×400) of the boxed area in panel (a) is shown.
