1. European Institute for Peptide Research (IFRMP no. 23), Laboratory of Cellular and Molecular Neuroendocrinology, INSERM U-413, UA CNRS, University of Rouen (M.K.K., L.D., M.-C.T., H.V.), 76821 Mont-Saint-Aignan, France
2. The Department of Animal Biology, University of Torino (L.L., A.F.), 10123 Torino, Italy
3. The Regulatory Peptide Center, Department of Biomedical Science, Creighton University Medical School (J.M.C.), Omaha, Nebraska 68178