the antagonist was given a single subcutaneous ( s.c. ) injections of 1-500 micrograms to 40-60 day old rats which were killed from 1 to 7 days later for assay of pituitary gnrh receptors , gonadal receptors for lh , fsh , and prl , and plasma gonadotropins , prl , and testosterone ( t ) .
C0018067
gonadal
C0018061
gonadotropins