Term Name: | orthochromatic erythroblast |
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Synonyms: | acidophilic erythroblast, eosinophilic erythroblast, late erythoblast, orthochromatic normoblast, pyknotic eto enrythroblast |
Definition: | The final stage of the nucleated, immature erythrocyte, before nuclear loss. Typically the cytoplasm is described as acidophilic, but it still shows a faint polychromatic tint. The nucleus is small and initially may still have coarse, clumped chromatin, as in its precursor, the polychromatophilic erythroblast, but ultimately it becomes pyknotic, and appears as a deeply staining, blue-black, homogeneous structureless mass. The nucleus is often eccentric and sometimes lobulated. |
Ontology: | Cell Ontology [CL:0000552] |