1. Laboratory of Neuroimmunovirology, Human Health Research Center, Armand-Frappier Institute, INRS, University of Quebec, Laval, Québec, Canada H7V 1B71;
2. Laboratoire de Neurovirologie, Université Paris XI, Kremlin Bicêtre, France2; and
3. Neuroimmunology Unit, Montreal Neurological Institute, McGill University, Montréal, Québec, Canada H3A 2B43