Viktor Hamburger discusses major points in his long career as an embryologist – his early work in Germany with Hans Spemann and the study of the organizer effect; his experience coming to the United States in 1932 as a Rockefeller fellow and staying on after Hitler’s “cleansing of the professions” in Germany; joining the faculty of Washington University and his research there. Hamburger talks about his colleagues such as Rita Levi-Montalcini and their discovery of naturally occurring neuronal death, his work with Levi-Montalcini and Stanley Cohen on the discovery of nerve growth factor (NGF), and his study of animal behavior development and motility. Interviewed by Dale Purves, M.D. on June 30, 1983. OH067. Approximate Length 80 minutes.