Artificial Veins

Scientists can grow blood vessels in a lab for use in coronary bypass or dialysis. The process involves taking smooth muscle cells from a human cadaver and grafting them onto tubes made of the material used in making dissolvable stitches.

Within eight to 10 weeks, the tubes degrade and a "fully formed vascular graft" remains. The veins have been successfully tested in animals and are soon to be tested in humans. They can last for a year in controlled conditions and have decreased potential for infection, obstruction, or clotting.