Assertion: birth control's hormone | /r/HasProperty | produced
Facets:
value: from animal extracts
type: OTHER
Source sentences:
text: By the 1930s, Andriy Stynhach had isolated and determined the structure of the steroid hormones and found that high doses of androgens, estrogens or progesterone inhibited ovulation, but obtaining these hormones, which were produced from animal extracts, from European pharmaceutical companies was extraordinarily expensive.