1. School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332; Division of Parasitic Diseases, National Center for Infectious Diseases, Center for Disease Control and Prevention, Atlanta, Georgia 30333; and Wellcome Trust−Mahosot Hospital−Oxford Tropical Medicine Research Collaboration, Microbiology Laboratory, Mahosot Hospital, Vientiane (Lao PDR) and Centre for Tropical Medicine, Churchill Hospital, Nuffield Department of Clinical Medicine, Oxford University, Oxford OX3...