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Title: Normoblast  
Author: World Heritage Encyclopedia
Language: English
Subject: Megakaryocyte–erythroid progenitor cell, CFU-E, CFU-Meg, CFU-GEMM, CFU-GM
Collection: Blood
Publisher: World Heritage Encyclopedia


An erythroblast is a type of red blood cell which still retains a cell nucleus. It is the immediate precursor of a normal erythrocyte.


  • Nomenclature 1
  • Development 2
  • Additional images 3
  • See also 4
  • External links 5


The term normoblast is sometimes used as a synonym for erythroblast, but at other times it is considered a subcategory. In the latter context, there are two types of erythroblasts:


There are four stages in the development of a normoblast.

A comprehensive diagram of human hematopoiesis
Illustration Description Image
Basophilic normoblast
Polychromatic normoblast (also polychromatophilic)
Orthochromatic normoblast (also orthochromatophilic)

Additional images

See also

External links

  • Normoblasts at the US National Library of Medicine Medical Subject Headings (MeSH)
  • Histology image: 01804loa – Histology Learning System at Boston University - "Bone Marrow and Hemopoiesis bone marrow smear, erythroblast series with proerythroblast "
  • Histology at

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