Serotonin transporter and cholecystokinin in diarrhea-predominant irritable bowel syndrome: Associations with abdominal pain, visceral hypersensitivity and psychological performance

Figure 1 Mucosal histology and immunohistochemistry in patients with diarrhea-predominant irritable bowel syndrome. A and B: Mucosal cholecystokinin expression in diarrhea-predominant irritable bowel syndrome patients; C and D: Mucosal serotonin transporter expression in diarrhea-predominant irritable bowel syndrome patients. CCK: Cholecystokinin; SERT: Serotonin transporter.