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Steeber DA, Campbell MA, Basit A, Ley K, Tedder TF.Steeber DA, et al. Among authors: ley k.Proc Natl Acad Sci U S A. 1998 Jun 23;95(13):7562-7. doi: 10.1073/pnas.95.13.7562.Proc Natl Acad Sci U S A. 1998.PMID: 9636189Free PMC article.