CNN CNN Special April 26, 2014 07:24:00
>> the next thing we're going to do is store your stem cells. >> remember those stem cells that i had stored? well, if i'm ever in need of an organ, they might just come in handy. >> a stem cell has the ability to become many other cell types. a heart cell or a liver cell. >> kidney cells, bladder cells, skin cells, heart cells, lung cells. you name it. >> so one cell becomes a universal donor. >> next step, engineering the body part. in one of dr. atala's latest breakthroughs in organ engineering is truly groundbreaking. printing. yes, printing body parts. >> the first printer we used was act...