‘Stomach bugs’ send protective immune cells rushing from gut to brain0

• SCIENCE, Science / Health, Science Mission Directorate, scientists, Space, Space Communications & Navigation Program, Space Launch System (SLS), Space Telescope, space-x-ipo, SpaceX
• September 16, 2026

Some immune cells make the long journey from the gut to membranes surrounding the brain. Credit: Steve Gschmeissner/SPL/Alamy Immune cells that fight stomach bugs can migrate from the gut to the brain, where they establish a lasting ‘memory’ of previous infection, according to a study in mice. The brain is shielded by protective membranes called