But Cort, what we've been discussing is that Hanson didn't find XMRV. She doesn't know what she found, or where the sequences originate from, except that she says it isn't mouse contamination or 22rv1. Her sequences are closer to Lo's P-MRVs than XMRV. No one has yet been able to say where these sequences might be originating from. Hanson doesn't say that her sequences are a result of contamination, in her paper. I'm interested in what the source of the sequences is, as it doesn't appear that it is either XMRV 22rv1 from the cell line, or mouse DNA, or mouse ERVs.