Brain Transcriptome Database (BrainTx)http://rdf.ncbi.nlm.nih.gov/pubmed/

Vera. Niederkofler, et.al., Repulsive guidance molecule (RGM) gene function is required for neural tube closure but not retinal topography in the mouse visual system., The Journal of neuroscience : the official journal of the Society for Neuroscience, 2004, 24
http://rdf.ncbi.nlm.nih.gov/pubmed/14749425