| 释义 |
normoblast
nor·mo·blast N5175250 (nôr′mə-blăst′)n. An erythroblast, especially one that is developing normally, in contrast with an abnormal megaloblast.
[German Normoblast : norm(al), normal (from Late Latin normālis; see normal) + -blast, -blast (from Greek blastos, bud, germ).]
nor′·mo·blas′tic (-blăs′tĭk) adj.TranslationsNormoblast
normoblast[′nȯr·mə‚blast] (histology) The smallest of the nucleated precursors of the erythrocyte; slightly larger than a mature adult erythrocyte. Also known as acidophilic erythroblast; arthochromatic erythroblast; eosinophilic erythroblast; karyocyte; metakaryocyte; metanitricyte; metarubricyte. Normoblast one of the stages in the maturation of erythrocytes in the bone marrow of mammals and man. The cytoplasm of a developing normoblast gradually becomes enriched with hemoglobin and the nucleus degenerates, resulting in the emergence of a mature erythrocyte. normoblast
normoblast [nor´mo-blast] a nucleated precursor cell in the series" >erythrocytic series, specifically one in a normal course of erythrocyte maturation, as opposed to a megaloblast. The four developmental stages of the series are called pronormoblasts or proerythroblasts, basophilic normoblasts or erythroblasts, polychromatophilic (or polychromatic) normoblasts or erythroblasts, and orthochromatic normoblasts or erythroblasts. adj., adj normoblas´tic.nor·mo·blast (nōr'mō-blast), A nucleated red blood cell, the immediate precursor of a normal erythrocyte in humans. Its four stages of development are: 1) pronormoblast, 2) basophilic normoblast, 3) polychromatic normoblast, and 4) orthochromatic normoblast See: erythroblast. [normo- + G. blastos, sprout, germ] nor·mo·blast (nōr'mō-blast) A nucleated red blood cell, the immediate precursor of a normal erythrocyte in humans. Its four stages of development are: 1) pronormoblast, 2) basophilic normoblast, 3) polychromatic normoblast, and 4) orthochromatic normoblast.
See also: erythroblast[normo- + G. blastos, sprout, germ]normoblast A nucleated red blood cell precursor showing the features of normal red cell development, as distinct from those of the MEGALOBLAST.nor·mo·blast (nōr'mō-blast) A nucleated red blood cell, the immediate precursor of a normal erythrocyte in humans. [normo- + G. blastos, sprout, germ]ThesaurusSeeerythroblast |