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

K. Morita, et.al., Claudin multigene family encoding four-transmembrane domain protein components of tight junction strands., Proceedings of the National Academy of Sciences of the United States of America, 1999, 96
http://rdf.ncbi.nlm.nih.gov/pubmed/9892664