Beta- catenin and TCF mediate cell positioning in the intestinal epithelium by controlling the expression of EphB/ephrinBLive and let die in the intestinal epitheliumEphB receptor activity suppresses colorectal cancer progression.Signaling Pathways in Intestinal Development and CancerRapid loss of intestinal crypts upon conditional deletion of the Wnt/Tcf-4 target gene c-Myc.EphB activity suppresses colorectal cancer progressionThe intestinal stem cell signature identifies colorectal cancer stem cells and predicts disease relapseThe beta catenin/TCF4 complex imposes a crypt progenitor phenotype on colorectal cancer cellsIsolation and in vitro expansion of human colonic stem cells