a significant increase in sdh activity was found in whole brain ( 34 % ) of old rats , as well as in all brain areas studied : brainstem ( 59 % ) , hypothalamus ( 38 % ) , cerebral cortex ( 35 % ) , striatum ( 30 % ) , midbrain ( 27 % ) , hippocampus ( 27 % ) and cerebellum ( 19 % ) .
C0006121
brainstem
C0025462
midbrain