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Agard NJ, Mahrus S, Trinidad JC, Lynn A, Burlingame AL, Wells JA.Agard NJ, et al. Among authors: trinidad jc.Proc Natl Acad Sci U S A. 2012 Feb 7;109(6):1913-8. doi: 10.1073/pnas.1117158109. Epub 2012 Jan 23.Proc Natl Acad Sci U S A. 2012.PMID: 22308409Free PMC article.