(A) ELISA assays were used to detect IL-18 (HC, n = 10, CF, n = 30, SAID, n = 10, NCFB, n = 4), (B) IL-1β (HC, n = 10, CF, n = 30, SAID, n = 10, NCFB, n = 4), (C) IL-1Ra (HC, n = 10, CF, n = 30, SAID, n = 7, NCFB, n = 4) in patient sera. The gene discussed is IL18; the disease is cystic fibrosis.