Comment on

• Defining the mode of tumour growth by clonal analysis.

  Driessens G, Beck B, Caauwe A, Simons BD, Blanpain C. Driessens G, et al. Nature. 2012 Aug 23;488(7412):527-30. doi: 10.1038/nature11344. Nature. 2012. PMID: 22854777 Free PMC article.
• A restricted cell population propagates glioblastoma growth after chemotherapy.

  Chen J, Li Y, Yu TS, McKay RM, Burns DK, Kernie SG, Parada LF. Chen J, et al. Nature. 2012 Aug 23;488(7412):522-6. doi: 10.1038/nature11287. Nature. 2012. PMID: 22854781 Free PMC article.
• Lineage tracing reveals Lgr5+ stem cell activity in mouse intestinal adenomas.

  Schepers AG, Snippert HJ, Stange DE, van den Born M, van Es JH, van de Wetering M, Clevers H. Schepers AG, et al. Science. 2012 Aug 10;337(6095):730-5. doi: 10.1126/science.1224676. Epub 2012 Aug 1. Science. 2012. PMID: 22855427