Figure 1. Correlations of IL-37 levels with clinical characteristics. Each points represents one person. (A) IL-37 mRNA levels of people’s PBMCs with and without asthma, as measured by means of qRT-PCR. (B) FeNO negatively correlated with IL-37 levels in asthma patients. (C) IL-37 mRNA levels of asthma patients’ (with or without allergic history) PBMCs, as measured by means of qRT-PCR. (D) IL-37 mRNA levels of asthma patients’ (with and without rhinitis history) PBMCs, as measured by means of qRT-PCR.