Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America.|US Military HIV Research Program, Silver Spring, Maryland, United States of America.|Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America, The Shraga Segal Dept. of Microbiology, Immunology and Genetics, Faculty of Health Sciences, and The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel.|US Military HIV Research Program, Silver Spring, Maryland, United States of America.|Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America.|Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America.|Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America.|Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America.|Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America.|Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America.|Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America.|Department of Microbiology, University of Washington, Seattle, Washington, United States of America.|US Military HIV Research Program, Silver Spring, Maryland, United States of America.|Department of Biochemistry, University of Washington, Seattle, Washington, United States of America, IAVI Neutralizing Antibody Center and Department of Immunology and Microbial Sciences, The Scripps Research Institute, La Jolla, California, United States of America.|Department of Biochemistry, University of Washington, Seattle, Washington, United States of America, IAVI Neutralizing Antibody Center and Department of Immunology and Microbial Sciences, The Scripps Research Institute, La Jolla, California, United States of America.|US Military HIV Research Program, Silver Spring, Maryland, United States of America.|US Military HIV Research Program, Silver Spring, Maryland, United States of America.|US Military HIV Research Program, Silver Spring, Maryland, United States of America.|Royal Thai Army Component, AFRIMS, Bangkok, Thailand.|US Army Component, AFRIMS, Bangkok, Thailand.|Royal Thai Army Component, AFRIMS, Bangkok, Thailand.|Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.|Royal Thai Army Component, AFRIMS, Bangkok, Thailand.|CDC Department, Thai Ministry of Public Health, Nonthaburi, Thailand.|US Military HIV Research Program, Silver Spring, Maryland, United States of America.|Vaccine Research Center, NIAID, NIH, Bethesda, Maryland, United States of America.|Vaccine Research Center, NIAID, NIH, Bethesda, Maryland, United States of America.|Vaccine Research Center, NIAID, NIH, Bethesda, Maryland, United States of America.|Department of Medicine, University of California, San Diego, La Jolla, California, United States of America.|Department of Medicine, University of California, San Diego, La Jolla, California, United States of America.|eSience Research Group, Microsoft Research, Redmond, Washington, United States of America.|US Military HIV Research Program, Silver Spring, Maryland, United States of America.|Department of Biochemistry, University of Washington, Seattle, Washington, United States of America, IAVI Neutralizing Antibody Center and Department of Immunology and Microbial Sciences, The Scripps Research Institute, La Jolla, California, United States of America, Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, United States of America.|Department of Microbiology, University of Washington, Seattle, Washington, United States of America.|US Military HIV Research Program, Silver Spring, Maryland, United States of America.|Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America.