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SEM of erythroid cells. Illustrative examples of the typical cell morphology of the different stages of erythrocyte maturation are shown. (i) Orthochromatic reticulocyte. (ii) Enucleating reticulocyte. (iii) R1 reticulocyte. (iv) R2 reticulocyte. (v) Mature reticulocyte/RBC. (vi) Donor RBC. Scale bar 5 μm.
