nicotinates , pantothenates , riboflavin , vitamins b6 and b12 ' free ( acetyl ) and total ( free and bound ) choline , biopterin , thiamin , biotin , methylated and nonmethylated folates in frontal , temporal , precentral , postcentral , and occipital cortex , thalamus , cerebellum , pons , basal ganglia , and substantia nigra were estimated .
C0004781
basal ganglia
C0038590
substantia