<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/SearchAction>
<http://www.genengnews.com/Registration.aspx?ReturnURL=%2Fgen-news-highlights%2Fscientists-prod-stem-cells-to-create-self-organized-vascular-networks%2F81248605%2F>