1. 
   xenotropic
   Literally ‘growing in a foreign environment`. Especially of endogenous retroviruses transmitted genetically in the host of their origin but that can only replicate in the cells of a different species.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
2. 
   xenotropic
   <virology> Refers to a genetically transmitted retrovirus that cannot replicate in the host species that is harboring it but which can infect and can only replicate in the cells of a dfferent species. ... (11 May 1997) ...
   Found op http://www.mondofacto.com/facts/dictionary?xenotropic
   
   

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