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Henikoff S, Henikoff JG.Henikoff S, et al. Among authors: henikoff jg.Proc Natl Acad Sci U S A. 1992 Nov 15;89(22):10915-9. doi: 10.1073/pnas.89.22.10915.Proc Natl Acad Sci U S A. 1992.PMID: 1438297Free PMC article.