Proliferation of single sorted CD34⁺/Lin⁻/CD38⁻ cells is optimal with IL-7, FL, KL, IL-2, and IL-3. The absolute number of total cells (A), NK cells (B), and DC (C) were analyzed from progeny of 2,640 single sorted CD34⁺/Lin⁻/CD38⁻ cells summarized in Table 2. Results in (A) are from all wells evaluated per cytokine condition. Results in (B) and (C) are from wells determined positive for NK cell or DC progeny, respectively. The P values listed are comparisons between adjacent bars where significant.