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Horak CE, Mahajan MC, Luscombe NM, Gerstein M, Weissman SM, Snyder M.Horak CE, et al.Proc Natl Acad Sci U S A. 2002 Mar 5;99(5):2924-9. doi: 10.1073/pnas.052706999. Epub 2002 Feb 26.Proc Natl Acad Sci U S A. 2002.PMID: 11867748Free PMC article.