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Periodical. Nusse, Roel, and Harold Varmus. "Three Decades of Wnts: A Personal Perspective on How a Scientific Field Developed." EMBO Journal 31, 12 ([13 June 2012]): 2670-2684. Article. 15 Images.. EMBO Journal. URL. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3380217/