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Barker N, Morin PJ, Clevers H.Barker N, et al.Adv Cancer Res. 2000;77:1-24. doi: 10.1016/s0065-230x(08)60783-6.Adv Cancer Res. 2000.PMID: 10549354Review.
Barker N, Clevers H.Barker N, et al.Bioessays. 2000 Nov;22(11):961-5. doi: 10.1002/1521-1878(200011)22:11<961::AID-BIES1>3.0.CO;2-T.Bioessays. 2000.PMID: 11056471Review.
Barker N, Hurlstone A, Musisi H, Miles A, Bienz M, Clevers H.Barker N, et al.EMBO J. 2001 Sep 3;20(17):4935-43. doi: 10.1093/emboj/20.17.4935.EMBO J. 2001.PMID: 11532957Free PMC article.