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Rugg-Gunn PJ, Cox BJ, Ralston A, Rossant J.Rugg-Gunn PJ, et al.Proc Natl Acad Sci U S A. 2010 Jun 15;107(24):10783-90. doi: 10.1073/pnas.0914507107. Epub 2010 May 17.Proc Natl Acad Sci U S A. 2010.PMID: 20479220Free PMC article.