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173890 https://hdl.handle.net/10776/2039 2010-06-16 eng Wellner, Karen 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/ Ernest Everett Just was an early twentieth century American experimental embryologist involved in research at the Marine Biological Laboratory (MBL) at Woods Hole, Massachusetts, and the Stazione Zoologica in Naples, Italy. Just was known for simple but elegant experiments that supported the "fertilizing" theory of Frank R. Lillie and served as an antagonist to Jacques Loeb's work with artificial parthenogenesis. Just's many experiments with marine invertebrates showed that the egg surface, or ectoplasm, plays an important role in the fertilization and development of eggs. People Fertilization Biography Invertebrates Just, Ernest Everett, 1883-1941 People Ernest Everett Just (1883-1941) Ernest Just (1883-1941)