to investigate possible sex differences in the feedback regulation of growth hormone ( gh ) secretion , concentrations of immunoreactive gh-releasing hormone ( grf ) and somatostatin ( ss ) were measured in the median eminence ( me ) and the hypothalamus of male and female rats bearing the mttw15 tumor , which secretes high amounts of gh and prolactin ( prl ) .
C0023610
grf
C0020663
hypothalamus