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Stanic D, Paratcha G, Ledda F, Herzog H, Kopin AS, Hökfelt T.Stanic D, et al. Among authors: ledda f.Proc Natl Acad Sci U S A. 2008 Mar 4;105(9):3610-5. doi: 10.1073/pnas.0712303105. Epub 2008 Feb 27.Proc Natl Acad Sci U S A. 2008.PMID: 18305161Free PMC article.