Figure 1From: Independent evolution of macrophage-tropism and increased charge between HIV-1 R5 envelopes present in brain and immune tissuePhylogenetic analysis (MEGA 5) of HIV-1 envelope nucleotide sequences amplified from brain and immune tissue. Tight compartmentalization of brain and immune tissue envelope sequences was observed for subjects CA110, 6568, 7766 and NA20. Envelope compartmentalization was less clear for subject 10017. Numbers at branch points represent bootstrap values.Back to article page