As depicted in Table 2, comparisons
between autoantibody content in sera and
parallel ICs bound to C1q concorded with the specificities
in PEG precipitates, as significantly fewer
patients had detectable levels of anti-dsDNA,
anti-histone and anti-ribosomal P antibodies in
C1q-bound IC than in corresponding serum samples,
whereas this was not the case for any of the
autoantibodies targeting RNA-associated targets