a significant increase of gs activity was found in whole brain ( 25 % ) of old rats , as well as in all brain areas studied , but particularly in midbrain ( 36 % ) , hypothalamus ( 32 % ) , brainstem ( 32 % ) , striatum ( 27 % ) and cerebellum ( 22 % ) .
C0025462
midbrain
C0006121
brainstem