placentas were obtained on day 100 ( n = 10 ) and day 165 ( n = 10 ) of gestation ( term = day 184 ) from untreated baboons , on day 100 from animals ( n = 7 ) treated with delta 4a between days 70-100 of gestation , and on day 165 from animals in which placental estrogen was decreased by fetectomy ( n = 5 ) on day 100 of gestation .
C0014939
estrogen
C0032961
gestation