<http://schema.org/url>
<http://phenomena.nationalgeographic.com/2011/07/21/house-mice-picked-up-poison-resistance-gene-by-having-sex-with-related-species/>
<http://phenomena.nationalgeographic.com/2011/07/21/house-mice-picked-up-poison-resistance-gene-by-having-sex-with-related-species/>