Increased serum levels of gASCA in CF patients. Shown are gASCA serum levels (median, Q25%, Q75%) for patients with cystic fibrosis (CF), crohn's disease (CD), ulcerative colitis (UC), rheumatoid arthritis (RA), as well as healthy volunteers (HC). Dashed line indicates threshold for positive anti-glycan titer (≥ 50 U/ml). Asterisk indicates statistical significance in the difference between CF and CD vs. UC, RA, and HC (p < 0.02, ANOVA and Scheffe test).