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Kong L, Dubnau D.Kong L, et al. Among authors: dubnau d.Proc Natl Acad Sci U S A. 1994 Jun 21;91(13):5793-7. doi: 10.1073/pnas.91.13.5793.Proc Natl Acad Sci U S A. 1994.PMID: 8016067Free PMC article.