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

Dong Wook. Han, et.al., Epiblast stem cell subpopulations represent mouse embryos of distinct pregastrulation stages., Cell, 2010, 143
http://rdf.ncbi.nlm.nih.gov/pubmed/21056461