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

T. Ishikawa, et.al., Mouse Wnt receptor gene Fzd5 is essential for yolk sac and placental angiogenesis., Development (Cambridge, England), 2001, 128
http://rdf.ncbi.nlm.nih.gov/pubmed/11092808