1. Graduate Group in Infectious Diseases and Immunity, School of Public Health, University of California, Berkeley, Berkeley, CA 94720, USA.
2. Division of Experimental Medicine, University of California, San Francisco, San Francisco, CA 94110, USA.
3. Department of Medical Microbiology and Immunology, University of California, Davis, Davis, CA 95616, USA.
4. California National Primate Research Center, Davis, CA 95616, USA.
5. AIDS and Cancer Virus Program, Leidos Biomedical Research Inc., Frederick National Laboratory, Frederick, MD 21702, USA.
6. Center for Fetal Monkey Gene Transfer for Heart, Lung, and Blood Diseases, California National Primate Research Center, Davis, CA 95616, USA.
7. Department of Pediatrics, University of California, Davis, Davis, CA 95616, USA.
8. Department of Cell Biology and Human Anatomy, University of California, Davis, Davis, CA 95616, USA.