Clonal expansion of sporadically induced K‐rasG12D in Lgr5hi cells Confocal scanning of the bottom of small intestinal crypts at indicated time points.

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Clonal expansion of sporadically induced K‐rasG12D in Lgr5hi cells Confocal scanning of the bottom of small intestinal crypts at indicated time points after sporadic activation of K‐rasG12D mutation in intestinal stem cells (bottom panels) or in WT controls (top panels). Clonal expansion of sporadically induced K‐rasG12D in Lgr5hi cells Confocal scanning of the bottom of small intestinal crypts at indicated time points after sporadic activation of K‐rasG12D mutation in intestinal stem cells (bottom panels) or in WT controls (top panels). Lgr5 stem cells are marked with EGFP (green). Clones are randomly marked with YFP (pseudo color white), RFP (red) or membrane tagged CFP (blue), driven from the R26R‐Confetti locus. K‐rasG12D clones expand faster over time than their WT counterparts, many crypts being fixated within 14 days of tracing. Scale bars; 50 μm. Expansion of Lgr5hi cell numbers over time within clones that contain at least one Lgr5hi cell. The numbers represent the percentage of clones with a certain number of Lgr5hi cells for each time point. As the average size of clones gradually increases in WT, the K‐rasG12D activated clones colonize the stem cell compartment much faster. Blue hues represent the relative frequency of Lgr5hi cell numbers per time point, 50% is blue; 0% is white. Left matrix is for WT clones, right matrix is for K‐rasG12D clones. Data information: Data from WT clones is reproduced from 7. Hugo J. Snippert et al. EMBO Rep. 2013;embr.201337799 © as stated in the article, figure or figure legend