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Reeves R, Elton TS, Nissen MS, Lehn D, Johnson KR.Reeves R, et al. Among authors: elton ts.Proc Natl Acad Sci U S A. 1987 Sep;84(18):6531-5. doi: 10.1073/pnas.84.18.6531.Proc Natl Acad Sci U S A. 1987.PMID: 3498164Free PMC article.