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Which of the following is not true of the blood-brain
barrier:
A. It is constituted by tight junctions between
the endothelial cells of brain capillaries and
the glial tissue
B. It allows passage of lipid soluble drugs into
the brain
C. It limits entry of highly ionized drugs into the brain
D. It regulates passage of substances from brain
into blood
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1 Answer

D. It regulates passage of substances from brain
into blood
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