How a newly discovered body part changes our understanding of the brain (and the immune system)

The discovery of brain lymphatics will open many new doors to understanding the brain, but it is also remarkable simply because there is so little about the human anatomy that has not yet been mapped. Indeed, because of these vessels’ hidden location deep within the brain and their close proximity to prominent blood vessels, brain lymphatics had legitimately escaped the notice of the biomedical community. That is, until now.