ethanol 's rate of elimination from the ventricle and its pattern of diffusion into the brain were determined using radioactive ethanol : elimination from the brain is rapid with a half-like of 24 to 35 sec , and the amount diffused throughtout the brain small , with a maximal concentration in any one section of 0.004 % ( such a concentration is at least 20 times less than would result from a moderately intoxicating parenteral dose of ethanol ) .
C0006104
brain
C0086045
concentration