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  1. 9 hours ago · Introduction. In 1885, Paul Ehrlich made a groundbreaking discovery: intravenous injection of dyes stained all organs except the brain. Citation 1 This discovery illuminated the existence of the highly restrictive biological barrier in the central nervous system (CNS) known as the blood-brain barrier (BBB).

  2. 9 hours ago · Interestingly, Professor Paul Ehrlich, a globally respected biologist, says his vote goes to Stormy Daniels for President. KTS WENT FURTHER: “The Justice Department has been weaponised against Trump. All these charges are just nonsense. As for his real estate deals, so what if he inflated the value of his properties? People do it all the time.

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