Research brings hope body parts can regrow: Like lower species, humans possess genes that direct the

Buoyed by recent genetic breakthroughs, researchers at Northwestern University and across the country have hopes of achieving a feat long thought to be impossible: enabling people to replace damaged body parts or even regrow missing limbs. Like salamanders and other lower species, humans possess genes that direct the body to make new arms and legs after an injury. But in humans, the genes lie dormant, inactivated after evolution favored the swift patching of wounds through scarring over the slow regeneration of body parts. ... Continue Reading