title: Answer to 'COPD and IPF: it's all about regulation and balance'.
authors.affiliation: Department of Respiratory Medicine, Beijing Tongren Hospital, Capital Medical University, , Beijing, China.
authors.forename: Jia
authors.initials: J
authors.lastname: Hou
authors.forename: Yongchang
authors.initials: Y
authors.lastname: Sun
authors.forename: Hui
authors.initials: H
authors.lastname: Zeng
mesh_terms: D018414:CD8-Positive T-Lymphocytes; D005260:Female; D006801:Humans; D053645:Interleukin-2 Receptor alpha Subunit / Q000032:analysis*; D017493:Leukocyte Common Antigens / Q000032:analysis*; D008297:Male; D029424:Pulmonary Disease, Chronic Obstructive / Q000276:immunology*; D012907:Smoking / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*
chemical_list: D053645:Interleukin-2 Receptor alpha Subunit; D017493:Leukocyte Common Antigens
keywords: COPD - Mechanisms; Idiopathic pulmonary fibrosis; Lymphocyte Biology