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Singer II, Kawka DW, Kazazis DM, Alberts AW, Chen JS, Huff JW, Ness GC.Singer II, et al.Proc Natl Acad Sci U S A. 1984 Sep;81(17):5556-60. doi: 10.1073/pnas.81.17.5556.Proc Natl Acad Sci U S A. 1984.PMID: 6382266Free PMC article.