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Protti MP, Manfredi AA, Straub C, Howard JF Jr, Conti-Tronconi BM.Protti MP, et al.Proc Natl Acad Sci U S A. 1990 Oct;87(19):7792-6. doi: 10.1073/pnas.87.19.7792.Proc Natl Acad Sci U S A. 1990.PMID: 2145582Free PMC article.