Fig. 2

Boxplots (median [interquartile range]) representing distribution of antibody values (grayscale units) in the different systemic autoimmune rheumatic disease (SARD) cohorts for full-length Ro52 (a), fragment Ro52-2 (b), and Ro52 200–239-aa peptide (c). aa amino acid, MCTD mixed connective tissue disease, RA rheumatoid arthritis, SjS Sjögren’s syndrome, SLE systemic lupus erythematosus, SSc systemic sclerosis. Rings and stars indicate outliers and extreme values respectively