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Boyko VP, Karasev AV, Agranovsky AA, Koonin EV, Dolja VV.Boyko VP, et al. Among authors: agranovsky aa.Proc Natl Acad Sci U S A. 1992 Oct 1;89(19):9156-60. doi: 10.1073/pnas.89.19.9156.Proc Natl Acad Sci U S A. 1992.PMID: 1409617Free PMC article.