Replacing Body Parts using your own cells, grown on a scaffold, no rejections.
They also showed a scaffold from a pig kidney that can be seeded with human cells.
Custom-made hearts, lungs, kidneys, and other organs could revolutionize organ transplantation. Airs January 26, 2011 on PBS
Program Description
Scientists are learning how to grow custom-made body parts so they can be ready when you—and your vital organs—start falling apart. At the University of Minnesota, Doris Taylor and her colleagues strip organs of their cells, reseed the organ "skeletons" with living cells, and watch as the organs start working right in front of their eyes.
http://www.pbs.org/wgbh/nova/body/replacing-body-parts.html