in the ventriculo-aqueductal and ventriculo-cisternal perfusion systems in the rabbit the extraction of ( 14 ) c-labelled d-hexoses ( glucose , 3-o-methyl-glucose , alpha-methyl-glucoside and galactose ) , ( 131 ) i ( - ) and ( 24 ) na was inhibited when 82 % of the na ( + ) in the perfusion fluid was replaced by choline .
C0019494
hexoses
C0016945
galactose