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This is a contribution to the knowledge of testicular hormones from studies and experiments performed at the Butantan and Oswaldo Cruz institutes. The following subjects are covered in the different chapters of the book: history of testicular hormones, results of castration and transplantation of a testicle in man and other vertebrates, relations of the hypophysis and the pineal body to gonads and sexual functions, testicular secretion and chemistry of the testicular hormone. From the book it is manifest that certain sexual and individual characteristics of mammals, birds, amphibians, fish and some invertebrates originate from and persist in influences of the sex glands which have a morphogenic and conservative influence on the genitals, estruation and the psychosexual behavior of man and animals as well as on the evolution of physiologic phenomena and the development of structures unrelated to sexual functions, as that of the body, the hair of certain animals and
Os hormonios testiculares. JAMA. 1937;109(20):1663. doi:10.1001/jama.1937.02780460073037
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