normoblast

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Related to Normoblasts: polychromatophilic erythroblast

normoblast

 [nor´mo-blast]
a nucleated precursor cell in the 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]
References in periodicals archive ?
Peripheral Blood Smear Examination (Under Leishman Stain) Hypochromia Target Cell Microcytosis Polychromasia Anisocytosis Normoblast Poikilocytosis Basophilic Stippling Spherocytes c.
As a possible factor associated with fetal anemia in the case of Kell alloimmunization is suppression of erythropoiesis, reticulocyte and normoblast counts are inappropriately low for the degree of fetal anemia in fetuses and neonates.
The multivariate statistic is far more sensitive than histogram analysis to the presence of circulating normoblasts, for instance, and has flagged such specimens almost unerringly.
They contend that the failure of normal migration of the primiti-ve normoblasts results in the cerebral cleft.
Bone marrow examination shows normocellularity with findings of profound depletion of erythroid cells, abnormal very large pronormoblasts and normoblasts exhibiting intranuclear eosinophilic inclusion bodies (Lampion or Lantern cells).
Clusters of normoblasts (extramedullary hematopoiesis) are commonly seen, as in fetal liver.
Cellularity : Low cellularity M: E ratio : Increased 7:1 Erythroid Series : Erythroid series hypoplasia, few colonies of normoblasts Myeloid Series : Few granulocytes, few myelocytes, few metamyelocytes.
The bone marrow aspiration revealed bi- and tri-nucleated normoblasts indicating erythroid hyperactivity and dyserythropoiesis with increased histiocytes without any evidence of hemophagocytosis.
Ehrlich distinguished 3 types of granulated white blood cells, as well as normoblasts, megaloblasts, and leukemic cells.
The peripheral blood smear films for blood cells and parasites had significant polychromasia and anisocytosis and presence of normoblasts but there were no plasmodia and microfilaria.