Frank W. Booth is a member of the Department of Biomedical Sciences, College of Veterinary Medicine, and the Department of Medical Pharmacology & Physiology, School of Medicine; Investigator, Dalton Cardiovascular Center; and Director of the Health Activity Center, all@the University of Missouri. Address: E102 Veterinary Medicine Building, University of Missouri, Columbia, MO 65211. Internet: BoothF@missouri.edu