Small airways disease.
D000402:Airway Obstruction / Q000503:physiopathology*; D000403:Airway Resistance; D000818:Animals; D001991:Bronchitis / Q000503:physiopathology; D002908:Chronic Disease; D004285:Dogs; D006801:Humans; D007249:Inflammation; D008173:Lung Diseases, Obstructive / Q000503:physiopathology; D009093:Mucus / Q000378:metabolism; D011656:Pulmonary Emphysema / Q000503:physiopathology