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Kingan TG, Bodnar WM, Raina AK, Shabanowitz J, Hunt DF.Kingan TG, et al.Proc Natl Acad Sci U S A. 1995 May 23;92(11):5082-6. doi: 10.1073/pnas.92.11.5082.Proc Natl Acad Sci U S A. 1995.PMID: 7761452Free PMC article.