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Average reactivities (MFI) and standard deviations of 39 XMRV antigens run against 64 ME/CFS sera and 90 blood donor (BD) sera at a dilution of 1/2. Note that even at the low dilution of 1/2, which should favor nonspecific binding, the g1deg (24 variants) and ma0deg (108 variants) degenerate peptides (boxed) did not have significantly higher binding activity than the nondegenerate variants.
