Primitive erythrocytes are cells that contain embryonic hemoglobin and mobilize oxygen in the body. These cells are large nucleated cells and only populate the blood during the first 6 weeks of gestation.
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Primitive erythrocytes enter circulation at E8.5 in the mouse. In humans, they are detectable from day 18.5 of gestation.
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Multiple AncestorsSingle AncestorNo DescendantsDevelops fromPart of Parent