... Rhode Island, 2Assistant Professor, Division of Infectious Diseases, Stanford University, Stanford, California and 3Professor, Division of Infectious Diseases, Stanford University, Stanford, ... A2; F1, F2), and circulating recombinant forms(CRF01_AE, CRF02_AG, and more). The different variantsare approximately equidistantly related, and are distinctfrom one another across the entire ... evolution: analysis of subtypes B and Creverse transcriptase and protease sequences. Program and abstracts of the 11th Conference on Retroviruses and Opportunistic Infec-tions; February 811, 2004; San...