A type of immature white blood cell that forms in the bone marrow. Myeloblasts become mature white blood cells called granulocytes (neutrophils, basophils, and eosinophils).
Definition from: Cancer.govBlood cell development. A blood stem cell goes through several steps to become a red blood cell, platelet, or white blood cell. 2013-01-15 Date last modified: 2014-10-28