polychromatic erythroblast
- polychromatic erythroblast
- polychromatophilic erythroblast 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 blue color, but takes on an acidophilic tint, which becomes progressively more marked as the cell matures. The chromatin of the nucleus is arranged in coarse, deeply staining clumps. Called also intermediate e., intermediate, polychromatic, or polychromatophilic normoblast, and rubricyte.
Medical dictionary.
2011.
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erythroblast — Originally, a term denoting all forms of human red blood cells containing a nucleus, both pathologic ( i.e., megaloblastic) and normal ( e.g., normoblastic). The pathologic or megaloblastic series is observed in pernicious anemia in relapse. The… … Medical dictionary
erythroblast — noun Etymology: International Scientific Vocabulary Date: circa 1890 a polychromatic nucleated cell of red bone marrow that synthesizes hemoglobin and that is an intermediate in the initial stage of red blood cell formation; broadly a cell… … New Collegiate Dictionary
polychromatic normoblast — polychromatophilic normoblast see under erythroblast … Medical dictionary
late erythroblast — orthochromatic erythroblast, oxyphilic erythroblast 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… … Medical dictionary
Normoblast — An erythroblast is a type of red blood cell which still retains a cell nucleus. It is the immediate precursor of a normal erythrocyte. Contents 1 Nomenclature 2 Development 3 Additional images 4 … Wikipedia
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rubricyte — Polychromatic normoblast. See erythroblast. [L. ruber, red, + kytos, cell] * * * ru·bri·cyte rü bri .sīt n an immature red blood cell that has a nucleus, is about half the size of developing red blood cells in preceding stages, and has cytoplasm… … Medical dictionary
