Proerythroblast

náhled|vpravo|200px|Proerythroblast

Proerythroblast is the first microscopically recognizable precursor of  hematopoiesis. It is a relatively large cell, with a large round nucleus and one or two nucleoli. Free ribosomes in the cytoplasm cause mild basophilia. The next cell of the blood cell lineage is the basophilic erythroblast.

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