has part has part has plasma membrane part develops from develops from basophilic erythroblast polychromatophilic erythroblast polychromatophilic normoblast A nucleated, immature erythrocyte in which the nucleus occupies a relatively smaller part of the cell than in its precursor, the basophilic erythroblast. The cytoplasm is beginning to acquire hemoglobin and thus is no longer a purely basophilic, but takes on acidophilic aspects, which becomes progressively more marked as the cell matures. The chromatin of the nucleus is arranged in coarse, deeply staining clumps. This cell is CD71-positive and lacks hematopoeitic lineage markers. polychromatic erythroblast intermediate erythroblast intermediate normoblast polychromatic normoblast rubricyte FMA:83506 ZFA:0005241 erythroblast polychromatophilic cytoplasm heterochromatin transferrin receptor protein 1