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Researchers to study 49ers RBs

Updated: June 9, 2011, 1:02 PM ET
ESPN.com news services

Two members of the San Francisco 49ers' famed "Million Dollar Backfield" who died within months of each other this year will have their brains examined by researchers at Boston University who are studying head injuries in sports.

Joe "the Jet" Perry died in April at the age of 84, and John Henry Johnson died last week at the age of 81. Their families have agreed to let the former players' brains be examined by the Center for the Study of Traumatic Encephalopathy, the San Francisco Chronicle ...

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