Defensive protein killed ancient primate retroviruses, research suggests

(PhysOrg.com) -- Retroviruses are the worst sort of guest. Over eons, these molecular parasites have insinuated themselves into their hosts’ DNA and caused a ruckus. The poor hosts can’t even be rid of the intruders by killing them, because they stubbornly remain after death.

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<p><a href="http://www.physorg.com/news148318491.html">Defensive protein killed ancient primate retroviruses, research suggests</a></p> <p>(PhysOrg.com) -- Retroviruses are the worst sort of guest. Over eons, these molecular parasites have insinuated themselves into their hosts’ DNA and caused a ruckus. The poor hosts can’t even be rid of the intruders by killing them, because they stubbornly remain after death.</p>