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"The cerebrospinal fluid is produced at a rate of 500 ml/day. Since the brain can only contain from 135-150 ml, large amounts are drained primarily into the blood through arachnoid granulations in the superior sagittal sinus. Thus the CSF turns over about 3.7 times a day. This continuous flow into the venous system dilutes the concentration of larger, lipoinsoluble molecules penetrating the brain and CSF.[2]"- taken from wikipedia I ended up looking for the awnser to this question because of an episode of Fringe [28april09] - basically the guy would have been fine.

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16y ago

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