Ludwig Haberlandt
Encyclopedia
Ludwig Haberlandt is known as a father of the hormonal contraception
Hormonal contraception
Hormonal contraception refers to birth control methods that act on the endocrine system. Almost all methods are composed of steroid hormones, although in India one selective estrogen receptor modulator is marketed as a contraceptive. The original hormonal method—the combined oral contraceptive...

. In 1921 carried out experiments on rabbits and he demonstrated a temporary hormonal contraception in a female by transplanting ovaries from a second, pregnant, animal.
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