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Smart JE, Oppermann H, Czernilofsky AP, Purchio AF, Erikson RL, Bishop JM.Smart JE, et al.Proc Natl Acad Sci U S A. 1981 Oct;78(10):6013-7. doi: 10.1073/pnas.78.10.6013.Proc Natl Acad Sci U S A. 1981.PMID: 6273838Free PMC article.
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