The profile of gene expression of each CD8 subpopulation is the same in different donors. Results represent the profiles of gene expression of various CD8 subsets from a different donor than the one shown in Figures 2–3. Cell sets were isolated, and individual cells and genes were disposed as described in Figures 2–3. To fit into a single figure, we show only major represented populations and cytotoxic and chemokine mRNAs, because these genes by themselves clearly define the properties of each CD8 subtype.