One of the many examples of innovation based on deuterium’s role in non-radioactive life science applications is with living cells. A technique uses the fact a carbon-deuterium bond vibrates at a unique frequency different from the normal carbon-hydrogen bond to support research into protein development inside the brain as long-term memory is formed.
http://phys.org/news/2013-10-chemist-optical-imaging-technique-mystery.html
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