Fig. 6. Expression of Notch signaling genes in the mouse gastrointestinal tract. In situ hybridizations were performed using RNA probes against Notch1, Notch4, Dll1, Dll3, Dll4 and Jag1 (magenta), together with the immunohistological detection of NCCs using an anti-p75^NTR antibody (green) in E11.5 stomach and intestine. Open arrowheads indicate expression in ENCCs, and solid arrowheads indicate expression in neighboring cells. The boxed regions are shown at high magnification in the right-hand panel of each pair.