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Hartung F, Angelis KJ, Meister A, Schubert I, Melzer M, Puchta H.Hartung F, et al.Curr Biol. 2002 Oct 15;12(20):1787-91. doi: 10.1016/s0960-9822(02)01218-6.Curr Biol. 2002.PMID: 12401176Free article.
Hartung F, Suer S, Puchta H.Hartung F, et al.Proc Natl Acad Sci U S A. 2007 Nov 20;104(47):18836-41. doi: 10.1073/pnas.0705998104. Epub 2007 Nov 13.Proc Natl Acad Sci U S A. 2007.PMID: 18000056Free PMC article.