1. The Clayton Foundation Laboratories for Peptide Biology, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, Ferring Research Institute Inc., Bldg 2, Rm 434, 3550 General Atomics Court, San Diego, California 92121, Alanex Corp., 3550 General Atomics Court, San Diego, California 92121, R. W. Johnson Pharmaceutical Research Institute, 1000 Rt. P.O. Box 300, Raritan, New Jersey 08869