CD34⁺ cells sorted into CD13⁺and CD13⁻ progenitor cells. (A) Presorted CD34⁺ cells. CD34⁺/c-kit⁺/CD13⁺cells averaged 10% to 15%. (B) Postsorted CD34⁺/c-kit⁺/CD13⁺cells. (C) Postsorted CD34⁺/c-kit⁺/CD13⁻cells. (D) Postsorted CD34⁺/c-kit⁻/CD13⁺cells. (E) Postsorted CD34⁺/c-kit⁻/CD13⁻cells. Similar results were obtained in 6 experiments separately performed, using either BM (n = 3) or PB (n = 3) cells in which the percentage of cells in quadrants of interest did not significantly differ between BM and PB.