Stem cells that form the blood and immune system, so-called hematopoietic stem cells (HSCs), have important applications in the treatment of blood cancers and other diseases of the immune system. Through blood stem cell transplantation, healthy blood stem cells can replace diseased ones, potentially making all future blood and immune cells and curing the patient. HSCs or the cells that they form are typically collected from donated umbilical cords or peripheral blood or bone marrow in adults, but the supply of such cells is a constant issue.
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Source: Phys.org