1. Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA.
2. Department of Immunology and Biotechnology, Tropical Medicine Research Institute, Khartoum, Sudan.
3. Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02142, USA.
4. Departments of Medicine, Molecular Microbiology, and Pathology & Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.
5. Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA.
6. Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA.
7. Institut für HIV Forschung, Universität Duisburg-Essen, Essen, Germany.
8. University of California, San Diego, San Diego, CA 92093, USA.
9. VA San Diego Healthcare System, San Diego, CA 92161, USA.
10. Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
11. Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA.