The primary role of proerythroblasts is to serve as the initial stage in the erythropoietic process. They undergo several stages of differentiation, including basophilic erythroblast, polychromatic erythroblast, orthochromatic erythroblast, and finally, reticulocyte, before maturing into erythrocytes. Each stage is marked by changes in cell size, nucleus condensation, and cytoplasmic composition, ultimately leading to a cell optimized for oxygen transport.
