Brain scans on former NFL players detect abnormal proteins found in CTE

This image provided by The New England Journal of Medicine in April 2019 shows an illustration based on brain scans from former NFL players. As a group, they were found to have higher levels of an abnormal protein than a comparison group of healthy men, indicated by red patches. The protein is a hallmark of a degenerative brain disease that’s been linked to repeated head blows. (The New England Journal of Medicine via AP)
New brain scan on former NFL players shows CTE
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