Excised tissues were prepared as previously described (41 (link)). Cell suspensions were blocked by the addition of Gamunex (Baxter, Deerfield, IL) for 30 minutes at RT, then washed in flow buffer (PBS + 2%FBS) and incubated at RT for 1 hour with the following antibodies (at a 1:10 final concentration): PerCP/Cy5.5-CD3, APC-CD34, PE-CD45, and/or APC-CD151 (BioLegend). Flow analysis was conducted on a Beckman Coulter Cyan. Cell sorting was performed on the Beckman Coulter Moflo XDP 70. Data analysis was performed using Summit, V5.1 (Beckman Coulter, Brea, CA).