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

Y. Wang, et.al., A large family of putative transmembrane receptors homologous to the product of the Drosophila tissue polarity gene frizzled., The Journal of biological chemistry, 1996, 271
http://rdf.ncbi.nlm.nih.gov/pubmed/8626800