Figure 3. Changes in the number of amino acid residues in the gp120 regions.

The numbers of amino acid residues in the gp120 regions were counted manually for 10 amino acid sequences derived from an individual. The data obtained from 15 patient samples were then plotted together in chronological order of sampling, as indicated from 1 to 10. Env regions are denoted above the panels, whereas patient IDs and the status of treatment are denoted below the panels.