1X10^6 BALB/c mouse thymocytes were surface stained with 1 ug Anti-Mouse CD90.2 (65088-1-Ig, Clone: 30-H12) and Fluorescein (FITC)-conjugated Affinipure Goat Anti-Rat IgG(H+L) at dilution 1:1000 (green), or stained with 1 ug Rat IgG2b Isotype Control and Fluorescein (FITC)-conjugated Affinipure Goat Anti-Rat IgG(H+L) at dilution 1:1000 (black). Cells were not fixed.