Stem cells come from a variety of sources including blood, bone marrow, umbilical cord blood, and adipose tissue.
Sources of Stem Cells
Blood and Bone Marrow:In autologous bone marrow transplantation, bone marrow is extracted from bone and given back to the same person to replenish the hematopoietic stems cells, for example in leukemia patients. For research use, stem cells from the blood are easier to obtain.
Cord Blood Cells:Autologous cord blood cells can be collected and stored at birth, and safely infused back into the individual at a later stage, without the risk of immune rejection. The use of cord blood stem cells in treating conditions such as brain injury and type I diabetes is already being studied in humans.
Adipose Tissue:Adipose tissue is a rich source of adult stem cells. These multipotent stem cells can differentiate into many cell types, such as fat, muscle and bone cells, as well as cartilage and nerve.
Types of Stem Cells
Embryonic Stem Cells
Adult Stem Cells
Induced Pluripotent Stem Cells
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