In this July 9, 2012 image made from video, Marine Sgt. Ron Strang shows his injured leg at the University of Pittsburgh Medical Center in Pittsburgh, Pa. He lost half of his thigh muscle from shrapnel in a bomb blast in Afghanistan, and with an experimental implant of connective tissue developed from pigs, it has had it strengthened. "It's been a huge improvement," he says. (AP Photo/Tom Sampson)

Associated Press
In this July 9, 2012 image made from video, Marine Sgt. Ron Strang shows his injured leg at the University of Pittsburgh Medical Center in Pittsburgh, Pa. He lost half of his thigh muscle from shrapnel in a bomb blast in Afghanistan, and with an experimental implant of connective tissue developed from pigs, it has had it strengthened. "It's been a huge improvement," he says. (AP Photo/Tom Sampson)
In this July 9, 2012 image made from video, Marine Sgt. Ron Strang shows his injured leg at the University of Pittsburgh Medical Center in Pittsburgh, Pa. He lost half of his thigh muscle from shrapnel in a bomb blast in Afghanistan, and with an experimental implant of connective tissue developed from pigs, it has had it strengthened. "It's been a huge improvement," he says. (AP Photo/Tom Sampson)
View Comments (4)