Erythrocyte precursor cell

Erythrocyte precursor cells reside in the bone marrow, and are part of erythropoesis, the formation of circulating erythrocytes (i.e., red blood cells).

The erythroid progenitor cells develop in two phases: erythroid burst-forming units ( BFU-E) followed by erythroid colony-forming units ( CFU-E); BFU-E differentiate into CFU-E on stimulation by erythropoietin, and then further differentiate into erythroblasts when stimulated by other factors.