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

A. Rattner, et.al., A family of secreted proteins contains homology to the cysteine-rich ligand-binding domain of frizzled receptors., Proceedings of the National Academy of Sciences of the United States of America, 1997, 94
http://rdf.ncbi.nlm.nih.gov/pubmed/9096311