<http://schema.org/description>
"Scientists at the Universities of Birmingham and Warwick have shed new light on how sperm navigate the female reproductive tract, 'crawling' along the channel walls and swimming around corners; with frequent collisions."^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2012-05-sperm-collide-egg.html>