Hairs lose in the inner ear results in hearing loss. If scientists are able to regenerate the
sensory hair, people who are deaf will be able to hear again. The sensory hair produces and electrical
signal that responds to vibration in the inner ear. Scientist found that using the gene Atoh1 and
implanting that into the cochleae o young mice, the mice began to form extra
sensory hair cells. The next step in
this hypothesis is to test it on humans.
http://www.sciencedaily.com/releases/2012/05/120511122322.htm
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