capable of capable of megakaryocyte-erythroid progenitor cell megakaryocyte/erythrocyte progenitor colony forming unit erythroid megakaryocyte CFU-EM megakaryocyte/erythroid progenitor cell MEP Meg/E progenitor CFU-MegE A progenitor cell committed to the megakaryocyte and erythroid lineages. myeloid cell hematopoietic oligopotent progenitor cell progenitor cell erythrocyte differentiation megakaryocyte differentiation