SERPINB2 and asthma: In addition, the expression level of SERPINB2 was up-regulated in the nasal epithelium of AR patients (Figure 3B), the expressions of POSTN and CPA3 were up-regulated in the bronchial epithelium of AR patients (Figure 3C), the expressions of POSTN and CPA3 were up-regulated in the nasal epithelium of asthma patients (Figure 3D), and the expressions of SERPINB2, POSTN, and CPA3 were up-regulated in the bronchial epithelium of asthma patient (Figure 3E).