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Cahill GM, Besharse JC.Cahill GM, et al. Among authors: besharse jc.Proc Natl Acad Sci U S A. 1989 Feb;86(3):1098-102. doi: 10.1073/pnas.86.3.1098.Proc Natl Acad Sci U S A. 1989.PMID: 2492661Free PMC article.