Question

what are the sources of stem cells ?

Answer 1

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There are three known accessiblesources of autologous adult stem cellsin humans: bone marrow, adipose tissue, and blood. Stem cells can also be taken from umbilical cord blood just after birth. Of all stem cell types, autologous harvesting involves the least risk.

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Answer 2

In some parts of the body, such as the gut and bone marrow, stem cells regularly divide to produce new body tissues for maintenance and repair. Stem cells are present inside different types of tissue. Scientists have found stem cells in tissues, including: the brain.