STEM CELL part 16

Stem cell 1

 

Adult stem cells typically generate the cell types of the tissue in which they reside. For example, a blood-forming adult stem cell in the bone marrow normally gives rise to the many types of blood cells. It is generally accepted that a blood-forming cell in the bone marrow-which is called a hematopoetic stem cell-cannot give rise to the cells of a very different tissue, such as nerve cells in the brain. Experiment over the last several years have purported to show that stem cells  from one tissue may give rise to cell types of a completely different tissue. This remains an  area of great debate within the research community. This controversy demonstrates the challenges of studying adult stem cells and suggests that  additional research using adult stem cells is necessary to understand their full potential as future therapies.

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