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Body & Brain

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football players

HARD KNOCKS A degenerative brain disease called chronic traumatic encephalopathy turns up in athletes like football players who take many hits to the head.

Prevotella

BAD BACTERIA  Bacteria such as Prevotella (shown) are anaerobes — they can survive without oxygen. An increase in anaerobic bacteria on the penis raises the risk of HIV infection, a new study suggests.

illustration of nerve cells

Mapping electrical signaling among the vast network of neurons is one key aspect of trying to understand how the brain works.

Body & Brain

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