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173710 https://hdl.handle.net/10776/1756 2010-06-02 eng Kearl, Megan Arizona State University. School of Life Sciences. Center for Biology and Society. Embryo Project Encyclopedia. Arizona Board of Regents open access http://creativecommons.org/licenses/by-nc-sa/3.0/ Otto Mangold was an early twentieth century embryologist who specialized in the development of amphibian embryos. A major emphasis of his research was refining the concept of the organizer, now referred to as embryonic induction. He was born on 4 November 1891 in Auenstein, Germany, and came from what Viktor Hamburger, a colleague and personal acquaintance, described as "peasant stock." Mangold attended several universities including Tübingen, Freiburg, and Rostock. He was one of Hans Spemann's first students at Rostock before Mangold had to leave to serve in the air force in World War I. People Organizers, Embryonic Biography Amphibians Otto Mangold (1891-1962)