Researchers from Western Kentucky University and the University of Louisville worked together to see which genes were switched on or off after acoustic trauma, according to the BMC journal Neuroscience.
Michael Smith, who led the study at Kentucky, is quoted by the journal as saying: "Understanding how fish are able to repair their hair cells may eventually help us to understand ear injury in people and provide treatments for hair cell loss."
The research showed that growth hormone is involved in this regeneration in zebrafish. "Injecting growth hormone into zebrafish stimulated cell proliferation in their inner ears," Smith says.
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