1X10^6 human peripheral blood lymphocytes were surface stained with 0.5 ug Anti-Human CD62L (65167-1-Ig, Clone: DREG56) (green) or 0.5 ug isotype control antibody (black), and CoraLite®488-Conjugated AffiniPure Goat Anti-Mouse IgG(H+L). Cells were not fixed.