Metzger, M., Conrad, S., Alvarez-Bolado, G., Skutella, T., & Just, L. (2005). Gene expression of the repulsive guidance molecules during development of the mouse intestine. Developmental Dynamics, 234(1), 169-175. Retrieved from http://www3.interscience.wiley.com/cgi-bin/fulltext/110571158/PDFSTART.