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Genetics

25 August 2011

Adult stem cells re-grow fingertips

Specialised adult stem cells are make it possible for mammals to re-grow the tips of injured fingers or toes, rather than a "jack of all trades" cell type formed in response to serious injury, a new study shows.

Specialised adult stem cells are make it possible for mammals to re-grow the tips of injured fingers or toes, rather than a "jack of all trades" cell type formed in response to serious injury, a new study shows.

"We've shown conclusively that what was thought to be a blastema is instead simply resident stem cells that are already committed to become specific tissue types," said Dr Irving Weissman, director of Stanford's Institute for Stem Cell Biology and Regenerative Medicine. "The controversy about limb regeneration in mammals should be over."

What the findings mean

 

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