Stem Cells Osteoarthritis How Are Stem Cells Extracted From Their Source?

How are stem cells extracted from their source? - stem cells osteoarthritis

I am part of a scientific project called Leading Edge, "and the theme of my group are stem cells. We have an idea, but we have an urgent question:

How did you actually remove the stem cells of the adult body / other source?

We know where they come from and what they are, but I do know how to extract.