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Scientists use 3-D printing to help grow an ear

Ear Created from 3D Printer

The work is a first step toward one day growing customized new ears. Scientists at Cornell have put 3-D printing to an incredible medical use: They've made an ear remarkably similar to a natural one. Using 3-D images of a human ear, they printed a mold to be injected with gel containing collagen from rats' tails, HealthDay reports. Next, they added cartilage from cows' ears.

 

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