<http://schema.org/description>
"Washington, Nov 20 (ANI): Researchers at Rush University Medical Center  have  apparently  found  why  natural  killer  cells  are powerless against HIV."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.oneindia.com/2010/11/20/howhiv-thwarts-the-bodys-naturaldefense.html>