Sequence analysis of a human immunodeficiency virus type 1 env gene PCR amplified from
a Brazilian woman's peripheral blood mononuclear cell DNA (sample RJIO1) showed that it …

Viral DNA sequences were determined over the V3 region of env from 28 infected
individuals living in the high HIV-1 prevalence Brazilian cities of Rio de Janeiro and São …

Objective: To examine the genetic heterogeneity of the V3 region of HIV-1 gp120 from 22
Brazilian HIV-1 specimens. Design: Genetic heterogeneity was examined by DNA …

We analyzed, by env and gag heteroduplex mobility assay, 149 human immunodeficiency
virus (HIV-1) positive samples collected in Ceará during the year 2000. The prevalence of …

We describe the genetic variability of HIV-1 subtypes and recombinant genomes in samples
from southeastern and southern Brazilian regions. Phylogenetic analysis of a subset of 34 …

Present knowledge of human immunodeficiency virus type 1 (HIV-1) envelope
immunobiology has been derived almost exclusively from analyses of subtype B viruses, yet …

DNA sequences encoding the C2 to V3 region of envelope glycoprotein gp120 of human
immunodeficiency virus type 1 (HIV-1) were amplified by PCR from uncultured peripheral …

Genetic subtypes of human immunodeficiency virus type 1 can be distinguished on the basis
of phylogenetic analysis of their envelope (env) gene. A significant proportion of human …

Humanimmunodeficiency virus type 1 sequences have been shown to cluster into two
distinct groups, called M (main) and O (outlier). 1 Group M sequences, to which the ma-jority …

We have identified six monoclonal antibodies (MAbs) mapping to both linear and
conformation-dependent epitopes within the V2 region of the human immunodeficiency virus …