... of Microbiology and Immunology, University of Melbourne, Vic 3010, Australia and 6Department of Clinical and Biological Sciences, University of Insubria, Varese, 21100, ItalyEmail: Karen ... virusesaccording to geographical location. Today, due to contin-uous virus transmission, mutation and recombination,the demarcation of HIV-1 subtypes has become increas-ingly blurred, and the categorization ... Central yours — you keep the copyrightSubmit your manuscript here:http://www.biomedcentral.com/info/publishing_adv.aspBioMedcentralAIDS Research and Therapy 2005, 2:3 http://www.aidsrestherapy.com/content/2/1/3Page...