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Body & Brain

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For people with a specific gene variant, eating a lot of processed meat may increase their risk of getting colon cancer.

Chemical signals sent between mammalian sperm's Izumo1 protein and the egg protein Juno or Folr4 ensure that the reproductive cells fuse.

Repeated helmet impacts have been linked to changes in the white matter of some football players' brains. The changes lingered even after six months of no-contact rest, which suggests that repeated hits over many seasons may lead to cumulative alterations, scientists say.

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