by Tarwinder Rai, University of Alberta P2X1 is strongly expressed on CD73+CD8+ T cells and its inhibition partially restores the potential effects of ATP. (A) Representative histogram plots, and (B) cumulative data showing P2X1 expression in CD73-/CD73+ CD8+ T cells. (C) Representative histogram plots, and (D) cumulative data of CD73 expression with/without treatment with ATP (25 μM) and...