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... ut also the human body's hardest skull protecting the brain.
And the skull has a very powerful barrier, the blood-brain barrier, as long as a substance with a larger molecular weight cannot enter the skull.
For example, if you eat food that you have never eaten before, if you are uncomfortable, you will first have abdominal pain, and then more severely, other organs will fail, but the brain will be fine.
Without this barrier, these symptoms are gone, because once the macromo ...
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