Confocal micrograph showing the superior saggital sinus in the mouse. Immune cells are shown in green lining this tube, and blood vessels in red

Why it takes guts to protect the brain against infection

04 November 2020

The brain is uniquely protected against invading bacteria and viruses, but its defence mechanism has long remained a mystery. Now, a study in mice, confirmed in human samples, has shown that the brain has a surprising ally in its protection: the gut.

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