Also morphologically recognizable as definitely belonging to the erythroid series. It is oval or round.
Size:
8-12 µm
Cytoplasm:
Shows a polychromatic staining reaction, i.e., staining by both basic and acid stains, giving a purple tint which becomes more acidophilic as the cell matures, due to the hemoglobin appearance.
Nucleus:
Occupies a relatively smaller part of the total and decreases in size as the cell ages; it stains darkly and the chromatin is arranged in clumps. It is in central or slightly eccentric position.
