Has science unearthed the Holy Grail of pain relief?

Scientists studying one of nature's simplest organisms have helped to unravel the structure of a key molecule that controls pain in humans.

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<p><a href="http://www.physorg.com/news103391248.html">Has science unearthed the Holy Grail of pain relief?</a></p> <p>Scientists studying one of nature's simplest organisms have helped to unravel the structure of a key molecule that controls pain in humans.</p>