Isolation of different subsets of human CB and mPB cells. Representative FACS plots showing gates used to isolate ALDH⁺ and ALDH⁻ CB (top left panel) and mPB cells (top right panel) and the CD38⁺ and CD38⁻ subsets within the ALDH⁺ CB cells (top middle panels). Bottom panels show the controls for each of these staining.