the higher levels of gonadotropins in female fetuses from from 12 -- 20 weeks suggest either that this maturation occurs earlier in males than in females , or , more probably , that feedback recognition of androgens is established before gestation reflects development of an estrogen-mediated feedback mechanism , and in addition the possible influence that hormones , such as prolactin or placental estradiol , may have on testicular steroidogenesis .
C0032961
gestation
C0014939
estrogen