Lab-grown body parts, extreme surgery heal wounded troops
Coming Home New Medicine
In this April 4, 2010 photo provided by Marine Sgt. Ron Strang, Strang lies on the ground after being hit by shrapnel in a bomb blast in Marja, Afghanistan. He lost half of his left thigh muscle and has had it strengthened with an experimental implant of connective tissue developed from pigs. "It's been a huge improvement," he says. He is taking part in a study at University of Pittsburgh Medical Center. (AP Photo/Ron Strang)