the hypothalamic-hypophyseal-gonadal axis is normal as determined by the testicular response to human chorionic gonadotropin ( hcg ) , the pituitary response to 200 micrograms gonadotropin-releasing hormone ( gnrh ) , and the hypothalamic-pituitary-testicular response to clomiphene .
C0032005
hypophyseal
C0032002
pituitary