Stroke victims with busy immune responses may also see mental declines
A small study hints at a way to predict who might fare worse among survivors
![brain scans](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/03/031119_AC_stroke_feat.jpg?fit=860%2C460&ssl=1)
BRAIN ATTACK Most strokes in the United States are caused by a blood clot in the brain. Now scientists have linked a person’s immune response shortly after a stroke with a later loss in cognitive ability.
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