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George AL Jr, Staub O, Geering K, Rossier BC, Kleyman TR, Kraehenbuhl JP.George AL Jr, et al. Among authors: kleyman tr.Proc Natl Acad Sci U S A. 1989 Sep;86(18):7295-8. doi: 10.1073/pnas.86.18.7295.Proc Natl Acad Sci U S A. 1989.PMID: 2550939Free PMC article.