Originate cell therapy has great potential for curing cartilage harm. However , it has remained unclear whether stem cells have the effect of regeneration or whether they trigger the process. Researchers have been capable to resolve this issue by tracking the effects in a new, organic model. After injection, stem cells orchestrate the recovery effect of endogenous cells but are not responsible for cartilage reconstruction. The breakthrough was enabled by preventing the normal immune system response to the molecule required to trace the injected cellular material.