| A | B |
|---|
| Rubriblast/Pronormoblast | 1% in BM (CYTOPLASM: small to moderate amount of deep blue; pale area next to nucleus may be seen NUCLEUS: 1-3 faint nucleoli; reddish purple color; homogeneous, lacy chromatin) |
| Prorubricyte/Basophilic Normoblast | 1-3% in BM (CYTOPLASM: deep blue-purple; occasionally patches of pink; irregular cell borders may be present; perinuclear halo may be apparent NUCLEUS: indistinct nucleoli; coarsening chromatin; deep purplish-blue color) |
| Rubricyte/Polychromatic Normoblast | 13-30% in BM (CYTOPLASM: abundant gray-blue NUCLEUS: irregular chromatin and coarsely clumped, eccentric) |
| Metarubricyte/Orthochromic Normoblast | 1-4% in BM (CYTOPLASM: pink-orange; may have varying degrees of basophilia NUCLEUS: small; dense; round or bizarre shape; eccentric) |
| Reticulocyte | (Only seen when stained with supra vital stain. CYTOPLASM: polychromatophilic NUCLEUS: no nucleus) |
| Mature RBC | (CYTOPLASM: Pink NUCLEUS: no nucleus) |
