When Scientists Disagree

Contrasting results from different groups often result from different experimental approaches to the same problem. In the case of XMRV (Xenotrophic Murine Leukemia -related Virus) and Chronic Fatigue Syndrome this issue is a matter of how different groups are choosing patients and how they are measuring virus.
Links for this podcast
Science paper showing detection of viral nucleic acid in blood cells of CFS patients
New York Times article summarizing recent events