Immune cells cross blood-brain barrier during human aging

Immune cells cross blood-brain barrier during human aging At a Glance Researchers found that some of the brain’s immune cells are replaced by immune cells from bone marrow as people age. The findings suggest that scientists might one day be able to use immune cells born outside the brain to deliver therapies for brain disorders. https://www.nih.gov/news-events/nih-research-matters/immune-cells-cross-blood-brain-barrier-during-human-aging