rubricyte

erythroblast

 [ĕ-rith´ro-blast]

a term originally used for any type of nucleated erythrocyte, but now usually limited to one of the nucleated precursors of an erythrocyte, i.e. one of the developmental stages in the erythrocytic series, in contrast to a megaloblast. In this usage, it is called also normoblast.

basophilic erythroblast a nucleated precursor in the erythrocytic series, preceding the polychromatophilic erythroblast and following the proerythroblast; the cytoplasm is basophilic, the nucleus is large with clumped chromatin, and the nucleoli have disappeared. Called also basophilic normoblast.

orthochromatic erythroblast see normoblast.

polychromatic erythroblast (polychromatophilic erythroblast) see normoblast.

Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ru·bri·cyte

(rū'bri-sīt),

Polychromatic normoblast. See: erythroblast.

[L. ruber, red, + kytos, cell]

Farlex Partner Medical Dictionary © Farlex 2012

kar·y·o·cyte

(kar'ē-ō-sīt)

A young, immature normoblast.
Synonym(s): rubricyte.

[karyo- + G. kytos, cell]

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e·ryth·ro·blast

(ĕ-rith'rō-blast)

The first generation of cells in the red blood cell series that can be distinguished from precursor endothelial cells. In normal maturation, four stages of development can be recognized: pronormoblast, basophilic normoblast, polychromatic normoblast, and orthochromatic normoblast.

[erythro- + G. blastos, germ]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012