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Submucosal edema and fibrosis was commonly noted in ureters from both groups. The submucosa was expanded by edema, fibrosis, and scattered mononuclear cell infiltrates in (A) B5916 (Group 1), (B) B1417 (Group 2), (C) B9315 (Group 1), and (D) B15816 (Group 2). Hematoxylin and eosin (Size bar 100 μm)
