BM-CD36+ Early Erythroid Progenitor cells are derived fromBM-CD34+ cells in culture. The BM-CD34+ cells are cultured for 7 to 8 days using StemSpan SFEM (StemCell Technologies,Inc.),a serum free expansion media for hematopoietic cells,with the addition of SCF (50ng/ml),EPO (2U/ml),IL-3 (10ng /ml),and IL-6 (10ng/ml) growth factors. The cells are harvested from culture,and the BM-CD36+ cells are positively isolated,using direct immunomagnetic CD36 MicroBeads labeling system