After great research it is known that in a healthy adult person around 10 11 -10 12 new blood cells are produced daily to maintain the stability. The process of hematopoiesis begins in the yolk sac in the early days when embryonic is developing. When the third month of gestation arrives, the stem cells move to the liver and then to the spleen.

 

 

Between the gestation periods these two organs are very important for the process of hematopoiesis, it is estimated that per 10 4 bone marrow cells there is one stem cell. These cells regenerate themselves and possess plenty of cells. Hematopoiesis stem cells (HSCs) have a great tendency of giving rise to every mature blood cell types. The hematopoiesis are self renewing which means that they reproduce themselves and when this is done some of their cells remain HSCs, because of which stability is maintained and the stem cells pool does not become low.

 

 

The hematopoiesis occurs in the core of the long bones in the children. These long bones can be tibia and femur etc. In adults it is usually occurs in sternum, cranium, pelvis and vertebrae. The process of hematopoiesis is that the pluripotent stem cells multiply to produce more pluripotent stem cells. Few pluripotent stem cells are different from the precursor cells which are committed to become a mature blood cell. The general feature and the understanding of hematopoiesis are really helpful in identifying all different cells in a bone marrow. The immature and precursor cell goes out from a cell which is making too much protein to the cell which is making very low protein.