Tags: Anatomical Structure.
A proerythroblast (or rubriblast or pronormoblast) is the earliest of four stages in development of the normoblast.In histology it is very difficult to distinguish it from the other -blast cells (lymphoblast myeloblast monoblast and megakaryoblast). The cytoplasm is blue in an H&E stain indicating that it is basophilic.Proerythroblasts arise from the CFU-e (colony-forming unit erythroid) cells and give rise to basophilic erythroblasts.
