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Kenyon L, Moraes CT.Kenyon L, et al. Among authors: moraes ct.Proc Natl Acad Sci U S A. 1997 Aug 19;94(17):9131-5. doi: 10.1073/pnas.94.17.9131.Proc Natl Acad Sci U S A. 1997.PMID: 9256447Free PMC article.