normoblast

normoblast
A nucleated red blood cell, the immediate precursor of a normal erythrocyte in humans. Its four stages of development are: 1) pronormoblast, 2) basophilic n., 3) polychromatic n., and 4) orthochromatic n. See erythroblast. [normo- + G. blastos, sprout, germ]

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nor·mo·blast 'nȯr-mə-.blast n an immature red blood cell containing hemoglobin and a pyknotic nucleus and normally present in bone marrow but appearing in the blood in many anemias compare ERYTHROBLAST
nor·mo·blas·tic -.blas-tik adj

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n.
a nucleated cell that forms part of the series giving rise to the red blood cells and is normally found in the blood-forming tissue of the bone marrow. Normoblasts pass through three stages of maturation: early (or basophilic), intermediate (or polychromatic), and late (or orthochromatic) forms. See also erythroblast, erythropoiesis.

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nor·mo·blast (norґmo-blast) [normo- + -blast] 1. a term often used as a synonym of erythroblast, but sometimes specifically denoting nucleated cells in a normal course of erythrocyte maturation, as distinguished from megaloblasts (q.v.); when the term is used with this meaning, the developmental stages of the nucleated cells of the erythrocytic series (q.v.) are generally named pronormoblasts (proerythroblasts) and basophilic, polychromatophilic, and orthochromatic normoblasts (see under erythroblast). 2. orthochromatic erythroblast.

Medical dictionary. 2011.

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  • normoblast — NORMOBLÁST s.n. Globulă roşie nedezvoltată din măduva hematopoietică, care, în cazul anemiei, poate ajunge şi în sânge. [< fr. normoblaste, cf. gr. norma – regulă, blastos – vlăstar]. Trimis de LauraGellner, 24.06.2005. Sursa: DN  NORMOBLÁST… …   Dicționar Român

  • normoblast — normoblast. См. нормобласт. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • 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

  • Normoblast — Rote Blutkörperchen Erythropoese (auch Erythropoiese) ist der Vorgang der Bildung und Entwicklung der Erythrozyten (rote Blutkörperchen). Sie erfolgt vor der Geburt in Dottersack, Leber, Milz und Knochenmark, nach der Geburt nur noch im… …   Deutsch Wikipedia

  • normoblast — ▪ biology       nucleated normal cell occurring in red marrow as a stage or stages in the development of the red blood cell (erythrocyte). Some authorities call the normoblast a late stage erythroblast, the immediate precursor of the red blood… …   Universalium

  • normoblast — Nucleated cell of the myeloid cell series found in bone marrow, that give rise to red blood cells. See erythroblast …   Dictionary of molecular biology

  • normoblast — noun erythroblast …   Wiktionary

  • Normoblast — Nor|mo|blạst, der; en, en <meist Pl.> [zu ↑Norm u. griech. blastós = Spross, Trieb] (Med.): kernhaltige Vorstufe eines roten Blutkörperchens von der ungefähren Größe u. Reife eines normalen roten Blutkörperchens …   Universal-Lexikon

  • normoblast — nor|mo|blast Mot Agut Nom masculí …   Diccionari Català-Català

  • Normoblast — Nor|mo|blạst 〈m.; Gen.: en, Pl.: en; Med.〉 kernhaltige Vorstufe des roten Blutkörperchens [Etym.: <lat. norma »Richtschnur« + grch. blastos »Keim«] …   Lexikalische Deutsches Wörterbuch

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