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Bertrand JY, Giroux S, Golub R, Klaine M, Jalil A, Boucontet L, Godin I, Cumano A.Bertrand JY, et al. Among authors: cumano a.Proc Natl Acad Sci U S A. 2005 Jan 4;102(1):134-9. doi: 10.1073/pnas.0402270102. Epub 2004 Dec 27.Proc Natl Acad Sci U S A. 2005.PMID: 15623562Free PMC article.