Here are some points that I noted while reading it... Some of this might be incorrect... I need to check over the paper again... "All nine laboratories used XMRV/P-MLV nucleic acid amplification testing (NAT), serological and/or culture assays of their own choosing..." The positive controls used XMRV taken from the 22Rv1 cell line. The WPI failed to reliably detect the positive controls (i.e. XMRV taken from the 22Rv1 cell line), whereas all (all? or nearly all?) the other labs did have success with the positive controls. The WPI did not report on their cultured samples because they had an issue of contamination with mycoplasma. Lo did use cultured assays, as advised by Mikovits, but had no success.