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

Meijia. Zhang, et.al., Granulosa cell ligand NPPC and its receptor NPR2 maintain meiotic arrest in mouse oocytes., Science (New York, N.Y.), 2010, 330
http://rdf.ncbi.nlm.nih.gov/pubmed/20947764