_:nf9d3304109e34fa7a87b7c35e2dfe412xb1
<http://schema.org/keywords>
"Stem Cells,Cell Biology,Regenerative Medicine/Tissue Engineering,Biomedical Engineering and Bioengineering"
<https://stemcellres.biomedcentral.com/articles/10.1186/s13287-015-0125-y/figures/3>