Tissue regeneration – Is it related to the “salt” intake in amphibians that is

Tad poles that have injured tails are observed to grow their tails much faster and sometimes when the salt is introduced after several hours by which time scar tissue is formed which makes it much harder for them to regenerate the lost tails.

The article in science news claims that children until the age of 11 can grow their lost fingers. I don’t know the basis for such a claim but this is an interesting finding that may one day help unlock the mystery behind human tissue regeneration.