"The Department of Defense has announced the creation of the Armed Forces Institute of Regenerative Medicine to 'harness stem cell research and technology... to reconstruct new skin, muscles and tendons, and even ears, noses and fingers.' The government is budgeting $250 million in public and private money for the project's first five years, and the NIH and three universities will be on the team
~ from Slashdot
Just like some reptilians can regrow their limbs, humans can do this too if this research comes to fruition.
Imagine regrowing a lost leg or arm!