Blood cell development; drawing shows the steps a blood stem cell goes through to become a red blood cell, platelet, or white blood cell.  Drawing shows a myeloid stem cell becoming a red blood cell, platelet, or myeloblast, which then becomes a white blood cell. Drawing also shows a lymphoid stem cell becoming a lymphoblast and then one of several different types of white blood cells.
Blood cell development. A blood stem cell goes through several steps to become a red blood cell, platelet, or white blood cell.