1. HIV-1 RNA Trafficking Laboratory, Lady Davis Institute for Medical Research, Sir Mortimer B. Davis Jewish General Hospital, Montréal, Québec H3T 1E2, Canada
2. Department of Medicine, Division of Experimental Medicine and Department of Microbiology and Immunology, McGill University, Montréal, Québec H3A 1A3, Canada
3. Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada