The Munro-Kellie hypothesis concerns a decrease in volume of this substance upon injury, and the
 Dandy Walker malformation obstructs the flow of this substance. The beta-2 transferrin assay is used to
 detect this substance,
The Munro-Kellie hypothesis concerns a decrease in volume of this substance upon injury, and the
 Dandy Walker malformation obstructs the flow of this substance. The beta-2 transferrin assay is used to
 detect this substance, and infection by Cryptococcus neoformans causes the pressure of this substance to
 increase. Oligoclonal bands appear in this substance in sufferers of multiple sclerosis, and this substance is
 produced in the choroid plexus before flowing through a series of four ventricles. It occupies the
 subarachnoid space. A lumbar puncture is commonly used to collect this substance, which makes up seven
 percent of the volume of the skull. For 10 points, name this clear substance that cushions the brain and
 spinal cord.
The Munro-Kellie hypothesis concerns a decrease in volume of this substance upon injury, and the
 Dandy Walker malformation obstructs the flow of this substance.
{cerebrospinal} fluid [or {CSF}]