GEORGE A. HARROP
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Almost all of our chemical and physiological knowledge of the estrogenic hormone has been acquired within a decade. Credit for this progress belongs to many workers. The stimulus which has produced such rapid development was furnished primarily by important studies. One was reported by Allen and Doisy late in 1923 when they showed that the injection of alcoholic follicular extracts from hog ovaries would bring about estrus in castrated mice or rats.1 The second advance was made by Aschheim and Zondek in 1927,2 when they demonstrated a substance in the urine of pregnant women which conformed in all of its
HARROP GA. PHYSIOLOGICAL AND CHEMICAL RELATIONSHIPS OF THE SEX HORMONES. Ann Intern Med. 1935;8:875–877. doi: https://doi.org/10.7326/0003-4819-8-7-875
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Published: Ann Intern Med. 1935;8(7):875-877.
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