Expansion of total nucleated cells, CD34⁺ cells, and CFUs under different treatment conditions over 2 weeks. Results are shown for human cord blood cells (left panel) and macaque cord blood cells (right panel). Treatment conditions include: (I) control, (II) DL-conditioned media, (III) DL coculture, (IV) HOXB4, (V) HOXB4 + DL-conditioned media, (VI) HOXB4 + DL coculture. Data shown represent the mean of 3 independent experiments. *P < .05