myeloblast

myeloblast
—myeloblastic, adj.
/muy"euh leuh blast'/, n. Cell Biol.
an immature myelocyte.
[1900-05; MYELO- + -BLAST]

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      immature blood cell, found in bone marrow, that gives rise to white blood cells of the granulocytic series (characterized by granules in the cytoplasm, as neutrophils, eosinophils, and basophils), via an intermediate stage that is called a myelocyte. The myeloblast nucleus is large and round or oval; its membrane is thin, and the contained chromatin (readily stainable nuclear material) is dispersed in fine strands or tiny granules. Several nucleoli are present; there is relatively little cytoplasm. Cells vary in size and are capable of amoeboid movement; they are difficult to distinguish in the laboratory from lymphoblasts.

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Universalium. 2010.

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Look at other dictionaries:

  • Myeloblast — Code TH H2.00.04.3.04002 The myeloblast is a unipotent stem cell, which will differentiate into one of the actors of the Granulocyte series …   Wikipedia

  • myeloblast — [mī′ə lō blast΄] n. [ MYELO + BLAST] a bone marrow cell, not normally in the blood, that develops into certain white blood cells (neutrophils, eosinophils, and basophils) …   English World dictionary

  • myeloblast — noun Etymology: International Scientific Vocabulary Date: circa 1904 a large mononuclear nongranular bone marrow cell; especially one that is a precursor of a myelocyte • myeloblastic adjective …   New Collegiate Dictionary

  • Myeloblast — Myeloblasten sind Vorläuferzellen einer bestimmten Population weißer Blutkörperchen (Leukozyten). Sie sind die ersten morphologisch identifizierbaren Zellen der Myelopoese (Granulopoese) im Knochenmarkausstrich. Sie sind die einzigen Zellen… …   Deutsch Wikipedia

  • myeloblast — noun An immature cell of bone marrow that develops into a myelocyte …   Wiktionary

  • myeloblast — An immature cell (10 to 18 μm in diameter) in the granulocytic series, occurring normally in bone marrow, but not in the circulating blood (except in certain diseases). When stained with the usual dyes, the cytoplasm is light blue, nongranular,… …   Medical dictionary

  • Myeloblast — Mye|lo|blạst [↑myelo... u. ↑...blast] m; en, en (meist Mehrz.): Keimzellen des Knochenmarks, Vorstufe der ↑Myelozyten …   Das Wörterbuch medizinischer Fachausdrücke

  • Myeloblast — My|e|lo|blast* der; en, en (meist Plur.) <zu gr. blastós »Spross, Trieb«> Keimzelle des Knochenmarks (Med.) …   Das große Fremdwörterbuch

  • myeloblast — n. bone marrow cells which have not yet fully developed (Anatomy) …   English contemporary dictionary

  • myeloblast — my·e·lo·blast …   English syllables

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