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Start Over You searched for: Creator Crick, Francis, 1916-2004 ✖ Remove constraint Creator: Crick, Francis, 1916-2004 Creator Zeuthen, Jesper ✖ Remove constraint Creator: Zeuthen, Jesper Creator Bak, Arne Leth ✖ Remove constraint Creator: Bak, Arne Leth Language English ✖ Remove constraint Language: English Periodical Proceedings of the National Academy of Sciences of the United States of America ✖ Remove constraint Periodical: Proceedings of the National Academy of Sciences of the United States of America Exhibit Tags embryology ✖ Remove constraint Exhibit Tags: embryology