Microglia, immune cells disguised as brain cells, are known as the janitors of the brain. Dialing up their usual duties just enough could provide an avenue to treat neurodegenerative disease.
Nicola Sturgeon, first minister of Scotland and Douglas Ross, the Scottish Conservative Party leader, in a pre-election debate.
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We have more neurons in our cortices than any other species, courtesy of an early technology – and along with them came our long, slow lives, with plenty of chances to gather around the dinner table.