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Median (interquartile range) CD4+ cell counts (A), CD4+ naive cell counts (B), and CD4+ memory cell counts (C) by baseline CD4+ stratum and study week for patients who underwent comprehensive immunological assessments by advanced flow cytometry. The shaded band reflects the lowest and highest interquartiles of the 2 age groups of HIV-negative control subjects (from AIDS Clinical Trials Group protocol A5113) [33].
