First cell of RBC development:
a. Proerythroblast(Ref: Nelson's 20/e p 2304-2308, Ghai 8/e p 330)Stage of RBC development are: Proerythroblast - Basophillic - polychromatic - Orthochromatic erythroblast - Nucleated RBC - Reticulocyte - Mature RBC.
Proerythroblast
Intermediate normoblast
Reticulocyte
Basophilic erythroblast
C.V.S.