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Gross appearance of intestinal inflammation in indomethacin treated Lewis rats. (A) Thickening of the bowel wall with creeping mesenteric fat (closed arrow) and adhesions (open arrow) is present at day 14 after injection of indomethacin on days 0 and 1. (B) Longitudinal ulcers (arrow) on the mesenteric border are seen in the mid small bowel at day 14.
