Regeneration of human damaged limbs from Salamanders

If salamanders can regenerate their limbs, deer their antlers and mice their hearts, then why can’t people regenerate a lost limb too? Scientists are looking into it and soon we will have a result. Cases, such as the one about Lee Spievack from Cincinnati, who restored a finger tip using the extract of pig bladder, has made scientists wonder about the possibilities of regeneration.
The doubt still remains that whether the extract of pig bladder was the healing ingredient or not is yet to be determined, but the regrown finger tip is there and something made it grow back. This summer, at Fort Sam Houston in San Antonio, scientists plan to test this extract on soldiers who have lost or disabled fingers due to burns.
So with fingers crossed, we can welcome the opportunity of regeneration of damaged limbs in humans.