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Katz MS, Partilla JS, Piñeyro MA, Schneyer CR, Gregerman RI.Katz MS, et al. Among authors: partilla js.Proc Natl Acad Sci U S A. 1981 Dec;78(12):7417-21. doi: 10.1073/pnas.78.12.7417.Proc Natl Acad Sci U S A. 1981.PMID: 6278472Free PMC article.