Multilineage repopulation ability of IL-3/IL-6/SCF ex vivo–expanded samples. BM, spleen, and PB of NOD/SCID mice were examined at 120 days posttransplantation. Histograms represent cells labeled with anti–CD45-PECy5 and anti–CD34-PE, anti–CD19-PE, or anti–CD33-PE antibodies. Quadrants were set according to isotype-matched negative control stainings.