Description: X Cell Stem Cells - The Rolls Royce of Stem Cells After working in the field of regenerative medicine for over 25 years, I have seen many stem cell applications and different types of stem cells. Stem cells can be autologous (from your own body or allogeneic (from a source not from your body). The most common stem cells that are autologous are from bone marrow or adipose tissue. Because using autologous in more involved and more invasive many clinics and doctors opt to use allogeneic sources. The majorit