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Butcher RA, Ragains JR, Kim E, Clardy J.Butcher RA, et al.Proc Natl Acad Sci U S A. 2008 Sep 23;105(38):14288-92. doi: 10.1073/pnas.0806676105. Epub 2008 Sep 12.Proc Natl Acad Sci U S A. 2008.PMID: 18791072Free PMC article.
Butcher RA, Ragains JR, Li W, Ruvkun G, Clardy J, Mak HY.Butcher RA, et al.Proc Natl Acad Sci U S A. 2009 Feb 10;106(6):1875-9. doi: 10.1073/pnas.0810338106. Epub 2009 Jan 27.Proc Natl Acad Sci U S A. 2009.PMID: 19174521Free PMC article.
Butcher RA, Schroeder FC, Fischbach MA, Straight PD, Kolter R, Walsh CT, Clardy J.Butcher RA, et al.Proc Natl Acad Sci U S A. 2007 Jan 30;104(5):1506-9. doi: 10.1073/pnas.0610503104. Epub 2007 Jan 18.Proc Natl Acad Sci U S A. 2007.PMID: 17234808Free PMC article.