From the site: The Miami Stem Cell Treatment Center is proud to be part of the only Institutional Review Board (IRB)-based stem cell procedure network in the United States that utilizes fat-transfer surgical technology.
Also from the site: Stem Cell Preparation After harvesting the Adipose Tissue (fat), the next step is to isolate the Adult Stem Cells by separating them from the fat cells. Our procedure, which involves a specialized and world-tested sterile “closed system” technology (so cells never come into contact with the outside environment), yields extremely high numbers of viable stem cells. (Imo this is where they utilize enzymes)