Scientists have found a hidden network in the brain, and it might prevent people from developing certain diseases.

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Sources:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4636982/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3749839/
https://www.brown.edu/initiatives/women-speak/speakers/helen-fitzgerald-cserr-class-faculty
https://www.ninr.nih.gov/aboutninr/director
http://web.jhu.edu/jhnmagazine/spring2010/features/a_curious_mind
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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4506234/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4493418/
https://www.theatlantic.com/health/archive/2017/10/scientists-somehow-just-discovered-a-new-system-of-vessels-in-our-brains/542037/
https://academic.oup.com/brain/article/140/10/2691/4085293
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Image Sources:
https://en.wikipedia.org/wiki/Cerebrospinal_fluid#/media/File:1317_CFS_Circulation.jpg
https://commons.wikimedia.org/wiki/Category:Cerebrospinal_fluid#/media/File:4_vials_of_human_cerebrospinal_fluid.jpg

Photograph of Helen FitzGerald Cserr, ca.1970. Unknown photographer. Helen FitzGerald Cserr interview, 2016. Brown Women Speak oral history project, Pembroke Center, Brown University: https://www.brown.edu/initiatives/women-speak/interview/helen-fitzgerald-cserr-class-faculty.

https://commons.wikimedia.org/wiki/File:Video_schematic_of_glymphatic_flow.ogv
https://en.wikipedia.org/wiki/File:Meninges-en.svg