1X10^6 Balb/c mouse peritoneal macrophages were surface stained with 0.5 ug CoraLite® Plus 647 Anti-Mouse CD80 (B7-1) (CL647-65076, Clone:16-10A1) or 0.5 ug CoraLite® Plus 647 Armenian Hamster IgG Isotype Control (PIP) (CL647-65210, Clone: PIP). Cells were not fixed.