Cell-surface expression of chemokine and cytokine receptors on CCR5⁺CD38⁺⁺⁺ CD4⁺ T cells. (A) Expression of IL-12Rβ1 and CXCR3 on CCR5⁺CD38⁺⁺⁺ CD4⁺ T cells (top row) versus expression on all other CD4⁺ T cells (bottom row). (B) Expression of IL-2Rβ (CD122) and TNFR2 (CD120b) on CCR5⁺CD38⁺⁺⁺ CD4⁺ T cells (top row) versus expression on all other CD4⁺ T cells (bottom row). (C) Expression of CCR7 and IL-7R (CD127) on CCR5⁺CD38⁺⁺⁺ CD4⁺ T cells (top row) versus expression on all other CD4⁺ T cells (bottom row). Subpopulations in regions are shown as percentages of CCR5⁺CD38⁺⁺CD4⁺ cells (top row) or of CD4⁺ cells (bottom row). Histograms shown are representative of results from at least 3 different subjects, all showing similar results.