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Snippert HJ, van Es JH, van den Born M, Begthel H, Stange DE, Barker N, Clevers H.Snippert HJ, et al. Among authors: barker n.Gastroenterology. 2009 Jun;136(7):2187-2194.e1. doi: 10.1053/j.gastro.2009.03.002. Epub 2009 Mar 24.Gastroenterology. 2009.PMID: 19324043
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