The lining of the gut and the dura mater of the brain both serve as barriers against germs. But their commonality goes deeper than that. Both contain well-trained immune cells, specifically, ...

Alzheimer's disease, multiple sclerosis, autism, schizophrenia and many other neurological and psychiatric conditions have been linked to inflammation in the brain. There's growing evidence that ...

Cerebrospinal fluid washes waste from the brain, eventually draining into the lymph nodes and bloodstream—but exactly how this flow bypasses the brain’s barriers to reach the periphery has remained ...