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Postel EH, Wohlman I, Zou X, Juan T, Sun N, D'Agostin D, Cuellar M, Choi T, Notterman DA, La Perle KM.Postel EH, et al.Dev Dyn. 2009 Mar;238(3):775-87. doi: 10.1002/dvdy.21887.Dev Dyn. 2009.PMID: 19235734Free article.
Postel EH, Weiss VH, Beneken J, Kirtane A.Postel EH, et al.Proc Natl Acad Sci U S A. 1996 Jul 9;93(14):6892-7. doi: 10.1073/pnas.93.14.6892.Proc Natl Acad Sci U S A. 1996.PMID: 8692914Free PMC article.
Postel EH, Abramczyk BM, Levit MN, Kyin S.Postel EH, et al.Proc Natl Acad Sci U S A. 2000 Dec 19;97(26):14194-9. doi: 10.1073/pnas.97.26.14194.Proc Natl Acad Sci U S A. 2000.PMID: 11121025Free PMC article.