Hey all you science types out there: is there any chance that XMRV is endogenous? Is that just impossible? My thoughts have gone in this direction because my dad was diagnosed with lymphoma as a young man, but then it just went away spontaneously and they thought maybe they'd made a mistake (I remember in particular him talking about having hugely swollen lymph nodes); since then he has lots of health ups & downs, food intolerances, needs to nap a lot, etc. Since I've learned about the CFS/lymphoma connection this has been much on my mind. I suppose another possible scenario would be him passing it to my mom and she to me, but that would make her an asymptomatic carrier I think, overall she's been in good health. Any thoughts appreciated.