Dynamic profile of CD8 T-cell subsets. Phenotypic markers of proliferation and susceptibility to apoptosis were measured at different time points over a 2-year period. Results are shown for (A) naive, (B) CM, (C) EM, and (D) TEMRA subsets. Individual graphs show the percentage of Ki67 (proliferation) and the MFIs of CD95 and BCL2. Median values and the IQ range (whisker bars) are shown for each parameter. Results in HD are shown in black.