Hormones throughout history.
Since remote ages man believed that, the different parts of his body and that of the animals, contained therapeutical elements, with effective powers like magic, and that he can fortify his own personality by consuming some parts of the bodies of human beings or animals. He also believed that his organic diseases were due to deficiency in these organs concerning ailments, so he treated them with similar organs of different animals.
El-Gammal
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D049673:History, 20th Century; D049690:History, Ancient; D049692:History, Early Modern 1451-1600; D049691:History, Medieval; D049711:History, Modern 1601-; D006728:Hormones / Q000266:history*
D006728:Hormones