How does waste leave brain?

Researchers at Washington University School of Medicine in St. Louis have discovered an anatomical brain structure (in green) that allows fluid waste to leave the brain. In neuroinflammatory conditions in mice, immune cells use these routes to enter the brain. The researchers think these structures and the cells and molecules positioned around them may help lead to new therapies for neuroinflammatory diseases. (Image: Leon Smyth/School of Medicine)
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