Testosterone inhibition of tyrosine hydroxylase expression in the hypothalamic arcuate nucleus.


Immunohistochemistry was used to detect tyrosine hydroxylase (TH)-containing neurons in the hypothalamic arcuate nucleus in male rats. Two weeks following castration, the number of TH-positive cells was significantly greater than in intact controls. The castration-responsive TH-positive cells were uniformly distributed throughout the mediolateral extent of… (More)


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