title: The strength in comparison: Franz von Leydig (May 21, 1821 - April 13, 1908).
authors.forename: Gary M
authors.initials: GM
authors.lastname: Wessel
mesh_terms: D000818:Animals; D004626:Embryology / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans