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

C. Lopez-Garcia, et.al., Transcriptomic analysis of polyamine-related genes and polyamine levels in placenta, yolk sac and fetus during the second half of mouse pregnancy., Placenta, 2009, 30
http://rdf.ncbi.nlm.nih.gov/pubmed/19131104