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Percentage of elevation of IgG, IgM, and IgA antibodies against lipopolysaccharides (LPS) in 94 patients positive for ASCA and in 94 healthy controls. Dotted lines indicate the cutoff for positivity used in each assay, as calculated by ROC analysis. The percentage of elevation is indicated on top of each distribution, while bars indicate the corresponding median. The AUC for LPS IgG was 0.82, 0.73 for LPS IgM, and 0.72 for LPS IgA.
