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Duncker BP, Shimada K, Tsai-Pflugfelder M, Pasero P, Gasser SM.Duncker BP, et al.Proc Natl Acad Sci U S A. 2002 Dec 10;99(25):16087-92. doi: 10.1073/pnas.252093999. Epub 2002 Nov 19.Proc Natl Acad Sci U S A. 2002.PMID: 12441400Free PMC article.