<http://schema.org/url>
<http://cdnph.upi.com/ph/st/th/7911389124428/2014/i/13891274345046/v1.5/Proteins-can-kill-metastasizing-cancer-cells-by-attaching-to-white-blood-cells.jpg?lg=5>
<http://www.upi.com/blog/2014/01/07/Proteins-can-kill-metastasizing-cancer-cells-by-attaching-to-white-blood-cells/7911389124428/>