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Researchers Experiment With 3-D Printer to Produce Human Body Parts

Human organ transplants have become fairly common around the world in the past few decades, but doctors and their patients still face the problem of tissue rejection and the need to quickly supply blood to the transplanted organ. Researchers at various universities are coordinating their efforts to find solutions -- including teams at the University of Pennsylvania and Rice University in Houston that are experimenting with a 3-D printer -- to make blood vessels and other structures for...

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