Progressive Supranuclear Palsy Update

– keeps the brain neurons separate from bloodborne substances – composed of the least permeable capillaries found in the body and of the water-soluble substances, allows only water glucose, and essential amino acids to pass through easily keeping out both nonessential amino acids and potassium, which are actively pumped out of the brain – metabolic wastes (urea, toxins, proteins, and most drugs) are also prevented from entering the brain … ................
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