1x10^6 C57BL/6 mouse bone marrow cells were surface stained with 0.2 ug CoraLite® Plus 647 Anti-Mouse CD31 (CL647-65058, Clone:390), and 0.2 ug CoraLite® Plus 647 Rat IgG2a Isotype Control (2A3) (CL647-65209, Clone: 2A3), and 0.2 ug FITC Plus Anti-Mouse CD45R (B220) (RA3-6B2) (FITC-65139, Clone: RA3-6B2). Cells were not fixed.