What BU is discovering about concussion-related brain disease

For nearly two decades, scientists at Boston University have been studying CTE. That's the degenerative brain disease, diagnosed after death, that's been linked to repeated head trauma like concussions.

Radio Boston talks with Hayley Cammarata, whose deceased brother Nick's brain was donated to BU this year, as well as Dr. Ann McKee, director of BU's CTE Center.

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