Longitudinal evaluation of the CD4:CD8 T-cell ratio from the time of cART initiation.

<p>Mean values of circulating CD4+ and CD8+ T-cell percentages as a function of years since cART initiation in Groups I, II, and III. Vertical bars indicate the 95% confidence intervals. The horizontal dashed lines represent upper and lower limits of the normal reference range for CD4+ T-cell percentages, and the horizontal dotted lines represent upper and lower limits of the normal reference range for CD8+ T-cell percentages.