Hope JL, Otero DC, Bae E-A, Stairiker CJ, Palete AB, Faso HA, Lin M, Henriquez ML, Roy S, Seo H, et al. PSGL-1 attenuates early TCR signaling to suppress CD8 T cell progenitor differentiation and elicit terminal CD8 T cell exhaustion. Cell Rep. 2023;42(5):112436.