1st stage of RBC development is?: (A) Erythroblast, (B) Intermediate normoblast, (C) Late normoblast, (D) Reticulocyte
Answer is A. Stages of RBC development: Proerythroblast - Early normoblast (Basophilic erythroblast) - Intermediate normoblast (Polychromatophilic erythroblast) - Late normoblast (Ohochromatic erythroblast) - Reticulocyte - Mature red cell EXTRA EDGE: - Hb can be 1st detected in proerythroblast - only by electron microscope - Hb can be 1st detected by routine staining in Intermediate Normoblast - 1st Non-nucleated cell seen in RBC development - Reticulocyte