1. Immature red blood cells that contain a nucleus and are found in bone marrow during normal blood cell development.
Usage: Medical/hematology term; Plural form of erythroblast; Also called nucleated red blood cells

Examples

• Erythroblasts are produced in the bone marrow as part of the normal process of red blood cell formation.
• The laboratory technician counted the erythroblasts in the blood sample to assess bone marrow function.
• During fetal development, erythroblasts are released into the bloodstream in higher numbers than in adults.
• Certain diseases can cause an abnormal increase in circulating erythroblasts.
• Erythroblasts mature and lose their nucleus to become mature red blood cells called erythrocytes.