1. Basic Research Program, SAIC Frederick, Chemistry Section, Laboratory of Comparative Carcinogenesis, and Biomolecular Structure Section, Macromolecular Crystallography Laboratory, National Cancer Institute at Frederick, Frederick, Maryland 21702; Department of Chemistry, George Mason University, Fairfax, Virginia 22030; Laboratory for the Structure of Matter, Naval Research Laboratory, Washington, District of Columbia 20375; Division of Medical Oncology, Department of Internal Medicine, University of...