1. College of Pharmacy, Oregon State University Corvallis, Oregon 97331 Department of Physiology and Pharmacology College of Veterinary Medicine The University of Georgia, Room 2223 Athens, Georgia 30601 Department of Pharmacology University of California at Santa Barbara California 93106 Bruker Instruments, Inc., 19 Fortune Drive Manning Park, Billerica, Massachusetts 01821 Faculty of Pharmaceutical Sciences Nagoya City University, Tanabe-dori, Mizuho-ku Nagoya 467-8603, Japan.