There is a sad aspect to this post on finding some basics, so some will want to skip it, while members like vets who are interested in lentivirii may well want to read it. I think that i previously carried the abstract to the FHL. (Yes, you can tell my age due to my using "virii" as often as i use "viruses"...) http://scienceblogs.com/erv/2012/08/28/ferrets-have-a-super-rare-erv/ [Posted in FML 7532]