Changes in hypothalamic corticotropin-releasing hormone (CRH) and neuropeptide Y (NPY) mRNA in experimental colitis in rats: R Berhane, J Marchand, R Cream, R Grand. Division of Pediatric Gastroenterology, Floating Hospital for Children, and Department of Anesthesiology, New England Med Ctr, Tufts University School of Medicine, Boston, MA