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Fisk GJ, Thummel CS.Fisk GJ, et al. Among authors: thummel cs.Proc Natl Acad Sci U S A. 1995 Nov 7;92(23):10604-8. doi: 10.1073/pnas.92.23.10604.Proc Natl Acad Sci U S A. 1995.PMID: 7479849Free PMC article.