Hematopoiesis Hematopoiesis Hematopoiesis is the development of blood cells. Prenatally, hematopoiesis occurs in the yolk sack, then liver, and eventually the bone marrow. In normal adults it occurs in marrow and lymphatic tissues.
All blood cells develop from pluripotential stem cells.
None of these stem cells are morphologically distinguishable, however. Examples of the morphologically distinguishable along the different blood cell series are given below. This page is always under construction. If you need more information, the best place on the internet to search is usually the National Library of Medicine .