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Cogoni C, Macino G.Cogoni C, et al.Proc Natl Acad Sci U S A. 1997 Sep 16;94(19):10233-8. doi: 10.1073/pnas.94.19.10233.Proc Natl Acad Sci U S A. 1997.PMID: 9294193Free PMC article.