The key role of erythropoietin ( Epo ) for colony formation by early erythroid progenitors ( burst-forming units-erythroid [ BFU-E ] ) has been confirmed .
the key role of erythropoietin ( epo ) for colony formation by early erythroid progenitors ( burst-forming units-erythroid [ bfu-e ] ) has been confirmed .
O O O O B-protein_molecule O B-protein_molecule O O O O O B-cell_type I-cell_type I-cell_type O B-cell_type I-cell_type O B-cell_type O O O O O O