So what we do is, in humans, we all have a layer of stem cells on the outside of our long bones. That layer is called the periosteum. And that layer is actually normally very, very tightly bound to the underlying bone, and it's got stem cells in it.
Iată ce am făcut: oamenii au un strat de celule stem pe exteriorul oaselor lungi, strat numit periost, care de obicei e foarte strâns legat de osul de bază, conținând celule stem.