... insertion of theV3 region of an R5 isolate into an X4 molecular clonealtered the tropism of an X4 isolate to an R5 phenotype[10,19,23,28-30].Our in-silico analysis of the V3 sequences of the ... India. We thank AIDS Reference and Reagent Program for providing HIV-1 isolates and cell lines and Roshni Mehta and Brian Wellensiek of Ahmad Lab for critically reviewing this manuscript.References1. ... X, Huang Y, Gettie A, Ba L, Blanchard J, Ho DD: CD4+lymphocytopenia in acute infection of Asian macaques by avaginally transmissible subtype-C, CCR5-tropic Simian/Human Immunodeficiency Virus...