Correction: Central Memory CD8+ T Cells Appear to Have a Shorter Lifespan and Reduced Abundance as a Function of HIV Disease Progression

Circulating CD8⁺ T cell subpopulations in HIV-infected subjects. Linear regressions and Pearson correlations (calculated with 95% confidence intervals and two-tailed p values) between the circulating CD4⁺ T cell count in HIV-infected patients (n = 20) and the absolute number of circulating CD8⁺ T cells (A), T_EM1 (B), T_EM2 (C), T_EMRA (D), T_CM (E), and T_N (F) cells/μl. Pearson correlations are shown, as data sets were found to be normal as determined using the Kolmogorov-Smirnov normality test (see Materials and Methods).