Globetrotting black rat genes reveal spread of humans and diseases

DNA of the common Black Rat (Rattus rattus) has shed light on the ancient spread of rats, people and diseases around the globe.

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<p><a href="http://www.physorg.com/news121087081.html">Globetrotting black rat genes reveal spread of humans and diseases</a></p> <p>DNA of the common Black Rat (Rattus rattus) has shed light on the ancient spread of rats, people and diseases around the globe.</p>