1. Drug Discovery Division, Southern Research Institute, Birmingham, Alabama 35205, Medical Department, Brookhaven National Laboratory, Upton, New York 11973, Department of Biochemistry, Tufts University Sackler School of Graduate Biomedical Sciences, Boston, Massachusetts 02111, Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, Indiana 46202, Department of Medicine, Case Western Reserve University, Cleveland, Ohio 44106, Department of Chemistry, Abbott...