Quite right, biophile. In these particular studies, I'd feel much more comfortable to know for sure that they will be using somebody who can definitely detect XMRV in ME/CFS patients, and quite happy to wait for that. Carrying on testing using techniques that are known not to work would be worse than just a waste of time and money...it'd be threatening to the future of XMRV research. "Oh we can't sit around waiting, let's just get on with it and test now...even if we don't know how to find it yet" doesn't sound too smart to me. Unless, of course, they know something we don't...