the purpose of this study was to determine why the rat placenta does not secrete androgens before day 12 of pregnancy , to ascertain whether the rat placenta secretes more androstenedione than testosterone , to compare the capacity of luteal and placental tissue to secrete androgen , and to determine whether the rat placental produces androstenedione via the delta 4- or delta 5-steroidogenic pathway .
C0032961
pregnancy
C0039601
testosterone