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originally posted by: Astyanax
a reply to: chr0naut
Our brains, unlike the rest of our body tissues, have no lymphatic vessels
Not true. They were just so hard to find that they evaded anamotical investigation for hundreds of years.
In searching for T-cell gateways into and out of the meninges, we discovered functional lymphatic vessels lining the dural sinuses. These structures express all of the molecular hallmarks of lymphatic endothelial cells, are able to carry both fluid and immune cells from the cerebrospinal fluid, and are connected to the deep cervical lymph nodes. The unique location of these vessels may have impeded their discovery to date, thereby contributing to the long-held concept of the absence of lymphatic vasculature in the central nervous system.
I'm afraid the theory you put forward was a speculative way to explain dreaming. It's most probably false.
originally posted by: zazzafrazz
I'm still trying to work out why we sleep.