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Shank EA, Klepac-Ceraj V, Collado-Torres L, Powers GE, Losick R, Kolter R.Shank EA, et al. Among authors: kolter r.Proc Natl Acad Sci U S A. 2011 Nov 29;108(48):E1236-43. doi: 10.1073/pnas.1103630108. Epub 2011 Nov 10.Proc Natl Acad Sci U S A. 2011.PMID: 22074846Free PMC article.