proerythroblast


proerythroblast

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pro·eryth·ro·blast (')prō-i-'rith-rə-.blast n a hemocytoblast that gives rise to erythroblasts
pro·eryth·ro·blas·tic -i-.rith-rə-'blas-tik adj

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n.
the earliest recognizable precursor of the red blood cell (erythrocyte). It is found in the bone marrow and has a large nucleus and a cytoplasm that stains deep blue with Romanowsky stains. See also erythroblast, erythropoiesis.

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pro·eryth·ro·blast (pro″ə-rithґro-blast) the earliest of the immature forms recognizable as a precursor of the mature erythrocyte. It is round, with a large nucleus that occupies most of the cell and is surrounded by a small amount of cytoplasm that is a clear deep blue, often stains unevenly, and shows a pale perinuclear halo. The nucleus is round and red to purple with several nucleoli and consists of a network of fairly uniformly distributed chromatin strands that give it a finely reticular appearance. This term may be used to refer to cells in either normal or abnormal maturation, but some authorities limit it to those involved in normal maturation, in contrast to promegaloblasts, in which case it is a synonym of pronormoblast. Called also rubriblast.

Medical dictionary. 2011.

Look at other dictionaries:

  • Proerythroblast — A proerythroblast (or rubriblast, or pronormoblast) is the earliest of four stages in development of the normoblast.In histology, it is very difficult to distinguish it from the other blast cells (lymphoblast, myeloblast, monoblast, and… …   Wikipedia

  • Proerythroblast — 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

  • proerythroblast — noun The earliest stage in the development of a normoblast Syn: pronormoblast …   Wiktionary

  • Proerythroblast — Pro|ery|thro|blạst [↑pro... u. ↑Erythroblast] m; en, en (meist Mehrz.): Stammzellen der roten Blutkörperchen, Zellen mit scholligem Protoplasma und großem Kern, aber ohne Hämoglobin …   Das Wörterbuch medizinischer Fachausdrücke

  • Proerythroblast — Pro|ery|thro|blast* der; en, en (meist Plur.) <zu ↑pro... u. ↑Erythroblast> Stammzelle der roten Blutkörperchen, Zelle mit scholligem Protoplasma u. großem Kern, aber ohne Hämoglobin (Biol., Med.) …   Das große Fremdwörterbuch

  • proerythroblast — pro·erythroblast …   English syllables

  • proerythroblast — n. the earliest recognizable precursor of the red blood cell (erythrocyte). It is found in the bone marrow and has a large nucleus and a cytoplasm that stains deep blue with Romanowsky stains. See also: erythroblast, erythropoiesis …   The new mediacal dictionary

  • proerythroblast — …   Useful english 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

  • Erythroblast — 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