Fig. 1
From: Airway IL-1β associates with IL-5 production following dust mite allergen inhalation in humans
Sputum IL-1β in D. farinae-responsive and non-responsive asthmatics. Fourteen participants underwent inhalation challenge with D. farinae, with sputum samples collected before and 24 h after challenge. Paired sputum samples were available for 11 of the participants, including 5 D. farinae-responsive and 6 non-responsive individuals. Pre and post-challenge sputum IL-1β concentrations were compared within groups using Wilcoxon signed rank test