“The new ears could provide the solution long sought by reconstructive surgeons to treat thousands of children born with the congenital deformity microtia, along with those who suffered ear loss to cancer or in an accident.  Cornell biomedical engineers and physicians said the flexible ears grew cartilage over three months to replace the collagen used to mold them.  Bonassar and his colleagues first constructed the ears with a digitized 3D image of a person’s ear that served to build a mold of a solid ear using a 3D printer.  A high-density, injectable gel made of living cells helped fill the mold. Once the mold removed, cartilage was grown on the collagen.”

http://www.rawstory.com/rs/2013/02/21/lifelike-ears-created-with-3d-printing/

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