1. Laboratory for Drug Design and Synthesis, Department of Chemistry and Biochemistry, University of Maryland, Baltimore County, Baltimore, Maryland 21250; Abteilung fürVirologie, Bernhard-Nocht-Institut für Tropenmedizin, Bernhard-Nocht-Strasse 74, Hamburg, D-20359 Germany; Department of Microbiology and Immunology, National Defense Medical Center, Taipei, Taiwan; Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warszawa, Poland; and W. W. Karakawa Microbial Pathogenesis Laboratory,...