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Purdie KJ, Pennington J, Proby CM, Khalaf S, de Villiers EM, Leigh IM, Storey A.Purdie KJ, et al.EMBO J. 1999 Oct 1;18(19):5359-69. doi: 10.1093/emboj/18.19.5359.EMBO J. 1999.PMID: 10508168Free PMC article.