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Lyubchenko YL, Shlyakhtenko LS.Lyubchenko YL, et al. Among authors: shlyakhtenko ls.Proc Natl Acad Sci U S A. 1997 Jan 21;94(2):496-501. doi: 10.1073/pnas.94.2.496.Proc Natl Acad Sci U S A. 1997.PMID: 9012812Free PMC article.