It seems incredible that scientists have discovered a new human organ. I mean, they cut people open right and left (living and dead). How could they miss anything?
Well, they did. A new organ has been identified. Actually, two. Plus a new “structure” that is not quite an organ.
First, the “structure”: In 2017, an elaborate system of drainage vessels was seen in the brain for the first time. Until then their existence was suspected, but not certain.