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Kobayashi H, Kaern M, Araki M, Chung K, Gardner TS, Cantor CR, Collins JJ.Kobayashi H, et al. Among authors: gardner ts.Proc Natl Acad Sci U S A. 2004 Jun 1;101(22):8414-9. doi: 10.1073/pnas.0402940101. Epub 2004 May 24.Proc Natl Acad Sci U S A. 2004.PMID: 15159530Free PMC article.