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

Shin. Matsubara, et.al., Epigenetic patterns at the mouse prolyl oligopeptidase gene locus suggest the CpG island in the gene body to be a novel regulator for gene expression., Gene, 2010, 465
http://rdf.ncbi.nlm.nih.gov/pubmed/20600704