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Your neurons are outnumbered. Many of the cells in your brain – in your whole nervous system, in fact – are not neurons, but glia. These busy little cells shape and insulate neural connections, provide vital nutrients for your neurons, regulate many of the automatic processes that keep you alive, and even enable your brain to learn and form memories.
The latest research is revealing that glia are far more active and mysterious than we’d ever suspected. But their journey into the spotlight hasn’t been an easy one.