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Linemeyer DL, Ruscetti SK, Scolnick EM, Evans LH, Duesberg PH.Linemeyer DL, et al.Proc Natl Acad Sci U S A. 1981 Mar;78(3):1401-5. doi: 10.1073/pnas.78.3.1401.Proc Natl Acad Sci U S A. 1981.PMID: 6262795Free PMC article.