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Wintroub BU, Klickstein LB, Kaempfer CE, Austen KF.Wintroub BU, et al. Among authors: kaempfer ce.Proc Natl Acad Sci U S A. 1981 Feb;78(2):1204-8. doi: 10.1073/pnas.78.2.1204.Proc Natl Acad Sci U S A. 1981.PMID: 6785751Free PMC article.