Forsberg, R <br/><br/>
A molecular clock dates the common ancestor of European-type porcine reproductive and respiratory syndrome virus at more than 10 years before the emergence of disease.  [electronic resource] 

 -  Virology  Oct 2001 
 - 174-9 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>0042-6822 
<br/><br/><label>Standard No.: </label>10.1006/viro.2001.1102  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Europe--epidemiology<br/>Molecular Epidemiology<br/>Molecular Sequence Data<br/>Open Reading Frames<br/>Phylogeny<br/>Porcine Reproductive and Respiratory Syndrome--epidemiology<br/>Porcine respiratory and reproductive syndrome virus--genetics<br/>RNA, Viral--genetics<br/>Swine