Figure 1. Lymph nodes are enriched for CD4⁺PD-1^hi T cells.

(a) Representative dot plot b) Mean fluorescence intensity (MFI) of PD-1 expression on lymph node CD4⁺ and CD4^– T cells subsets. c) Relative proportions of CD4⁺PD-1^hi T cells and CD4^– PD-1^hi T cells in LN and d) relative proportions of CD3 gated CD4⁺PD-1^hi T cells in LN and peripheral blood mononuclear cells (PBMC).