New technology is changing the science of transplants as we now know it. Through use of 3D printers everything from ears to most organs will someday be possible to reproduce. Bio-printing, although in the experimental stage, is expected to be a big part of the future of the medical field. At present many patients die while waiting for a suitable organ donor. Researchers at Wade Forest Institute for Regenerative Medicine have been creating porous frames resembling the shape of a particular organ they wish to reproduce. The unoccupied spaces can be filled with living cells using the printer’s bio-ink marker. At present bio-printed tissue is being used for drug testing and the first transplantable tissues are expected to be approved within one year. The process involves spraying layer upon layer of different cells and at the same time spraying polymers to help keep a particular shape. If the stems cells come from the patient receiving the transplant, there is little possibility of rejection. Approximately 125,000 people die yearly because they are unable to find a suitable organ donor. The success of 3D printers and bio-technology will make it possible to replace blood vessels, skin, bones, cartilage, organs and tissue in the near future.