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. 2010 Jan 8;12(1):R6. doi: 10.1186/ar2905

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Copyright ©2010 Vázques-Del Mercado et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Levels of anti-RNA helicase A (anti-RHA) versus other autoantibodies. IgG anti-U1RNP/Sm, ribosomal P (P peptide), double-stranded DNA (dsDNA), and β2 glycoprotein I (β2GPI) were determined by enzyme-linked immunosorbent assay. Serum dilutions used were 1:2,500 for anti-U1RNP/Sm and 1:500 for all others. Anti-RHA levels were semiquantified from immunoprecipitation using phosphorimager. (a) Anti-U1RNP/Sm antibodies. (b) Anti-P peptide antibodies. (c) Anti-dsDNA. (d) Anti-β2GPI. (e) Anti-RHA levels in anti-U1RNP/Sm-positive versus -negative sera. (f) Correlation of anti-RHA versus anti-U1RNP/Sm.