The cell indicated by the arrow is an E5 cell or orthochromatic normoblast. The nuclear chromatin is clumped and stains dark bluish. The cytoplasm is slightly blue. Compare the normoblast to the lymphocyte in the field. The two cells are approximately the same size. The nuclear chromatin of the lymphocyte is smooth and soft, while that of the normoblast appears hard and ridged, like a peach seed.
Course Section: 05. Nucleated Red Blood Cells
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