PD-1H expression in subsets of human PBMC.

<p>a) PBMCs co-stained for PD-1H along with Monocytes (CD14), T cell (CD3), and B cell (CD19) markers were analyzed by flow cytometry (n = 7). The overlay histogram shows PD-1H expression on CD14, CD3 and CD19 gated cells. The grey filled histogram represents isotype control. b) Cumulative data from seven donors showing PD-1H expression levels expressed as mean fluorescence intensity (MFI). c) Isolated monocytes were cultured for the indicated times and examined for PD-1H expression by flow cytometry (n = 5).