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"We believe that an understanding of this ‘salamander-like’ regenerative capacity in humans, and the critically missing components of this regulatory circuit, could provide the foundation for new approaches to repair joint tissues and possibly whole human limbs,” ... The researchers found that the prevalence of younger proteins was tied to the abundance of a microRNA that blocks the action of a messenger RNA that inhibits the production of new collagen proteins. Similar microRNAs are active in animals that can regrow limbs,"
Adult Humans Can Regenerate Cartilage: Study | The Scientist Magazine®: Collagen inside ankles has more turnover than that in hips, thanks to the action of microRNAs.
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