As the stem cell matures, several distinct.
Reticulocytes are immature red blood cells (RBCs). In the process of erythropoiesis (red blood cell formation), reticulocytes develop and mature in the bone.
Red blood cells are released into the blood stream in their immature (top) and internal structures (bottom) as they mature into red blood cells.
These include the red blood cells, white blood cells, and platelets. Immature blood cells are also called blasts. Some blasts stay in the marrow to mature. Others.