* Corresponding Author: Dr Paul Brennan Medical Biochemistry and Immunology, Henry Wellcome Research Institute, Cardiff University, Heath Park, Cardiff, CF14 4XN. Phone: +44 29 20744517 E-mail: [email protected] AC CE PT ED Copyright © 2006, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved. J. Virol. doi:10.1128/JVI.00983-06 JVI Accepts, publish...