Topics: Innovations, inventions
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![Cerebral blood flow after cortical spreading depression observed though graphene (Credit: ICFO/Ernesto Vidal).](https://mnd-assets.mynewsdesk.com/image/upload/c_fill,dpr_auto,f_auto,g_auto,q_auto:good,w_746/ec83lbsejfvu3nj5rhox.jpg)
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