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Genes Make Mouse That Roared

Genetically altered Mickey has no fear of cats

By Mary Papenfuss,  Newser Staff

Posted Dec 13, 2007 10:25 AM CST

(Newser) – Japanese scientists have modified mouse genes to make rodents unafraid of cats in a dramatic experiment that offers insight into the origins of terror. The breakthrough shows that fear is largely genetically hardwired rather than learned through painful experience, researchers say. Some of the mice,...   Read full story »

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