LSRFortessa (BD Biosciences). Sorting was conducted on a Sony Sy3200 through
the Siteman Cancer Center Flow Cytometry Core Facility. Fluorescein
isothiocyanate (FITC)-conjugated anti-CD45R/B220 (clone RA3–6B2),
phycoerythrin (PE)-conjugated anti-CD43 (clone S7), FITC-conjugated
anti-CD43 (clone S7), PE-Cy7-conjugated anti-CD45/B220 (clone
RA3–6B2), allophycocyanin (APC)-conjugated anti-IgM (clone II/41),
APC-conjugated anti-hCD2, and PE-conjugated anti-hCD2 were purchased from BD
Biosciences. PE-conjugated anti-hCD25 (clone BC96) and APC-conjugated
anti-hCD25 (clone BC96) were purchased from BioLegend.