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Length. A: total colon, aP < 0.05 vs control; B: Rectosigmoid colon; C: Transverse colon, cP < 0.05 vs IBS-D, dP < 0.01 vs IBS-D. IBS-D: Diarrhea type IBS; IBS-C: Constipation type IBS; FC: Functional constipation; IBS: Irritable bowel syndrome.
