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Murray R, Hutchison CA 3rd, Frelinger JA.Murray R, et al. Among authors: frelinger ja.Proc Natl Acad Sci U S A. 1988 May;85(10):3535-9. doi: 10.1073/pnas.85.10.3535.Proc Natl Acad Sci U S A. 1988.PMID: 3285344Free PMC article.
Colbert RA, Rowland-Jones SL, McMichael AJ, Frelinger JA.Colbert RA, et al. Among authors: frelinger ja.Proc Natl Acad Sci U S A. 1993 Jul 15;90(14):6879-83. doi: 10.1073/pnas.90.14.6879.Proc Natl Acad Sci U S A. 1993.PMID: 7688130Free PMC article.