The first experiments to demonstrate an endocrine function of the corpus luteum. On the occasion of the 100th birthday of Ludwig Fraenkel (1870-1951).
D000818:Animals; D003338:Corpus Luteum / Q000502:physiology*; D004704:Endocrinology / Q000266:history*; D005260:Female; D005858:Germany; D006176:Gynecology / Q000266:history; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008297:Male; D011817:Rabbits