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

W. Li, et.al., Mammalian DNA topoisomerase IIIalpha is essential in early embryogenesis., Proceedings of the National Academy of Sciences of the United States of America, 1998, 95
http://rdf.ncbi.nlm.nih.gov/pubmed/9448276