Stembook resourceshttp://www.stembook.org/scf/resources
PubMedhttp://www.ncbi.nlm.nih.gov/sites/entrez?db=PubMed
Ensemblhttp://www.ensembl.org/index.html
ISSCRhttp://www.isscr.org
HSCIhttp://www.hsci.harvard.edu/
Massachusetts Human Stem Cell Bank and International Registryhttp://www.umassmed.edu/umscr/index.aspx
EuroStemCellhttp://www.eurostemcell.org