Figure 3.

Level of serum IL-33 in patients sorted according to chest x-ray (CRX) findings. Using a digital portable anteroposterior (AP) technique, the chest X-ray findings were divided into five levels: (I) Normal finding (II) Interstitial thickening, {III) Focal consolidation, (IV) Multifocal consolidation (V) acute respiratory distress syndrome (ARDS). The serum concentration of IL-33 was determined by ELISA. For statistical significance determination, Mann–Whitney Rank Sum test was used. *P < 0.05.