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As the panic over BSE builds in Europe, you might be surprised to know that we still don’t know for sure where the disease came from. Britain’s Phillips inquiry may have rubber-stamped the idea that BSE emerged spontaneously in cattle. But many scientists believe that sheep must not be ruled out of the picture. Mike Scott is one of them. And he is adamant that Britain’s plans to eradicate scrapie could backfire. Scott works with Stanley Prusiner, who won a Nobel prize for discovering that rogue proteins cause BSE-type diseases. Scott told Ehsan Masood why it’s too soon to…