Erythropoiesis and Megakaryocytic series
Erythropoietic
Pronormoblast
Size
12-20 µm
Cytoplasm
dark blue
Basophilic normoblast
Size
10-15 µm
Cytoplasm
dark blue
Polychromatophilic normoblast
Size
10-12 µm
Cytoplasm
gary blue
Orthochromatic normoblast
Size
8-10 µm
Cytoplasm
more pink
Polychromasia
Size
8-8.5 µm
Cytoplasm
slightly more blue
Erythrocyte
Size
7-8 µm
Cytoplasm
pink with central pallor
Megakaryocytic series
Megakaryoblast
Size
10-24 µm
cytoplasm
Basophilic
Promegakaryocyte
Size
15-40 µm
cytoplasm
Basophilic
Megakaryocyte
Size
20-90 µm
cytoplasm
Blue to pink
Platelet
Size
2-4 µm
cytoplasm
Blue to pink