Mitotic rates, asymmetric divisions, colony efficiencies, and ADI of CD34⁺/CD38⁻ candidate hematopoietic stem cells upon exposure to regulatory molecules: recombinant human TPO, FL3-L, and SCF. Cytokine cocktail (containing Epo, IL-3, IL-6, GM-CSF, SCF, bFGF, and IGF-1) was used for comparison.