Figure 3.

Number of colonies generated from 200 CD34⁺ CD38⁻ (A), CD34⁺ CD45RA⁺ CD71⁻ (B), or CD34⁺ CD45RA⁻ CD71⁺ cells (C) plated directly in methylcellulose containing different concentrations of the same mixture of five cytokines used in the experiments shown in Fig. 1. Points for erythroid (•, from CFU-E and BFU-E), mixed (○, from CFU-GEMM), and myeloid (▴, from CFU-GM) colonies represent the mean ± SEM of values obtained from four experiments.