Kinetic analysis of hematopoietic development from H1 EB differentiation. (A) CD34⁺ EB cells were highly enriched for hematopoietic colony-forming activity. (B) Expression kinetics of the cell surface marker CD34. (C) Hematopoietic colony-forming kinetics of differentiated EB cells. E indicates erythroid; GM, granulocyte-macrophage; and GEMM, granulocyte-erythroid-macrophage megakaryocyte. Data are mean ± SD (n = 3).