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Skeletal system

Bioengineers create life-like human ear with 3-D printer

Environment

A 3-dimensional printer has aided a group of bioengineers in creating a life-like human ear, which could revolutionize bioengineering. But the possibilities stretch far and wide, with one start-up creating 3-D printer for the public it hopes will encourage creativity.

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Listener responses: bone marrow donation

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