1. The Longtine Center for Molecular Biology and Genetics and Harold Civin Laboratory of Neuropathology, Sun Health Research Institute, Sun City, Arizona 85351, Department of Microbiology, Midwestern University, Glendale, Arizona 85308, Department of Anatomy, National Cheng Kung University, Tainan, Taiwan 701, CNS Pharmacology, Pfizer Global Research and Development, Ann Arbor, Michigan 48106, and Department of Chemistry, University of Texas at Dallas, Richardson, Texas 75083