“Surgeons are finding industrial 3-D printers to be a lifesaver on the operating table. This technology, also known as additive manufacturing, has long produced prototypes of jewelry, electronics and car parts. But now these industrial printers are able to construct personalized copies of livers and kidneys, one ultrathin layer at a time. The medical field in particular is expected to benefit greatly from 3-D printing. Scientists are working on ways to print embryonic stem cells and living human tissue with the aim to produce body parts that can be directly attached to or implanted in the body.”

http://online.wsj.com/article/SB10001424127887324504704578410764264855512.html

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