LGR5 and intestinal neoplasm: (A, C) Representative section of Apc mutant intestinal tumours analysed by single-molecule fluorescence in situ hybridisation (smFISH) for Thbs1 (pThbs1, red dots) and Lgr5 (pLgr5, green dots in A) or the YAP target Sca1 (pSca1, green dots in C).