in order to examine the role of central catecholaminergic neurons in hypertension , the activity of tyrosine hydroxylase ( th ) , the rate-limiting enzyme in the synthesis of catecholamines , was studied in the hypothalamus , midbrain , pons-upper medulla , mid-medulla and lower medulla of one-kidney , one clip ( 1-k,1c ) and two-kidney , one clip ( 2-k,1c ) hypertensive rabbits and their respective operated controls ( 1-k,1 cc and 2-k,1 cc ) .
C0022664
medulla of
C0022646
kidney