[1] Galli SJ, Tsai M, Piliponsky AM. The development of allergic inflammation. Nature, 2008; 454, 445−54. doi:  10.1038/nature07204
[2] Huang K, Yang T, Xu JY, et al. Prevalence, risk factors, and management of asthma in China: a national cross-sectional study. Lancet, 2019; 394, 407−18. doi:  10.1016/S0140-6736(19)31147-X
[3] Zhao SM, Wang HS, Zhang C, et al. Repeated herbal acupoint sticking relieved the recurrence of allergic asthma by regulating the Th1/Th2 cell balance in the peripheral blood. Biomed Res Int, 2020; 2020, 1879640.
[4] Gerday S, Schleich F, Henket M, et al. Asthmatics with concordant eosinophilic disease classified according to their serum IgE status. Respir Med Res, 2020; 79, 100797.
[5] Tliba O, Panettieri RA Jr. Paucigranulocytic asthma: uncoupling of airway obstruction from inflammation. J Allergy Clin Immunol, 2019; 143, 1287−94. doi:  10.1016/j.jaci.2018.06.008
[6] Camacho I, Caeiro E, Nunes C, et al. Airborne pollen calendar of Portugal: a 15-year survey (2002-2017). Allergol Immunopathol, 2020; 48, 194−201. doi:  10.1016/j.aller.2019.06.012
[7] Guo W, Zhan XD, Jiang F, et al. Analysis of allergen components and identification of bioactivity of HSP70 in pollen of Populus deltoides. Proteome Sci, 2021; 19, 10. doi:  10.1186/s12953-021-00178-8
[8] Kuo CHS, Pavlidis S, Zhu J, et al. Contribution of airway eosinophils in airway wall remodeling in asthma: role of MMP-10 and MET. Allergy, 2019; 74, 1102−12. doi:  10.1111/all.13727
[9] Wang XY, Ning HY, Chu SM, et al. An analysis of spectrum of allergen sensitization among patients with tree pollen allergy in Beijing. J Clin Otorhinolaryngol Head Neck Surg, 2017; 31, 1819−23. (In Chinese
[10] Zheng JH, Li J, Li QH, et al. Monitoring and clinical significance of airborne pollen concentration in Chengde. Chin Arch Otolaryngol Head Neck Surg, 2021; 28, 301−4. (In Chinese