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Effect of saline or obestatin given intraperitoneally for 7 or 14 days on the area of colonic lesions in rats without or with acetic acid-induced colitis. Mean value ± SEM. N = 10 animals in each experimental group and each time of observation. a P < 0.05 compared to control at the same time of observation; b P < 0.05 compared to colitis plus saline at the same time of observation.
