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Weisman LS, Emr SD, Wickner WT.Weisman LS, et al. Among authors: emr sd.Proc Natl Acad Sci U S A. 1990 Feb;87(3):1076-80. doi: 10.1073/pnas.87.3.1076.Proc Natl Acad Sci U S A. 1990.PMID: 1689059Free PMC article.