Research on multiple regenerations

[paris]

Does any one know of any research on limb regeneration that has focused on re-regenerating? i.e. -a limb is removed, grows back then is removed again?

 

[Linus]

This probably doesn't help at all since I don't have sources, but it should be easy to find. A US researcher clipped the digits of a common species of newt, (firebellies or waltls) I believe once a year for their entire lives, to see how age affected regeneration. He did this for so many years he ended up passing the whole experiment onto his son or a younger protege to continue due to his old age.

This was a newspaper article I stumbled upon maybe last year. It shouldn't be too hard to find, sorry for the vagueness, but it's out there.