1. Proerythroblast - the earliest recognizable cell of the erythroid series:

2. Basophilic normoblast:

3. Polychromatophilic normoblast:

4. Orthochromatic normoblast:

5. Reticulocyte. SEM picture

6. Erythrocyte: SEM picture

7. Erythropoiesis - all stages.

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