They are unable to detect XMRV in the blood though, even in confirmed XMRV-positive prostate cancer patients... So if they are unable to detect XMRV in the blood of prostate cancer patients, why are they so certain that they should be able to detect XMRV in the blood of CFS patients? You'd think that they might ask themselves a question like that! Maybe they will though. I was very impressed with the wording of their prostate cancer study, and they did seem genuinely interested in investigating XMRV further.