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Pereira RF, Halford KW, O'Hara MD, Leeper DB, Sokolov BP, Pollard MD, Bagasra O, Prockop DJ.Pereira RF, et al.Proc Natl Acad Sci U S A. 1995 May 23;92(11):4857-61. doi: 10.1073/pnas.92.11.4857.Proc Natl Acad Sci U S A. 1995.PMID: 7761413Free PMC article.