GAST and irritable bowel syndrome: The densities of the gastrin-immunoreactive cells were 344.8±38.2, 567.9±38.9, 591.0±67.6, 579.1±54.7 and 612.9±61.1 cells/mm2 in the control, IBS-total, IBS-D, IBS-M and IBS-C groups, respectively.