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McMichael AJ, Gotch FM, Santos-Aguado J, Strominger JL.McMichael AJ, et al.Proc Natl Acad Sci U S A. 1988 Dec;85(23):9194-8. doi: 10.1073/pnas.85.23.9194.Proc Natl Acad Sci U S A. 1988.PMID: 2461564Free PMC article.