concentrations of alpha-tocopherol ( alpha-t ) in plasma , cerebrum , cerebellum , midbrain and brain stem and activity of selenium ( se ) -dependent glutathione peroxidase ( gsh-px ) in plasma were measured in 1- and 15-month-old male f344 rats fed diets containing vitamin e ( e , iu/kg ) and se ( ppm ) in the following combinations : 30 e , 0.1 se ( control diet , minimum requirements ) ;
C0025462
midbrain
C0006121
brain stem