to determine the mechanism and the site of action of catecholamines as well as hormones including thyrotropin-releasing hormone ( trh ) 1 and somatostatin on pituitary hormone release in patients with acromegaly and in normal subjects , the effects of these substances on growth hormone ( gh ) and prolactin ( prl ) secretion from adenomatous and nonadenomatous human pituitary cells in culture were examined .
C0040162
thyrotropin-releasing hormone
C0032002
pituitary