title: Physical properties of sputum and respiratory function in chronic bronchial disease.
mesh_terms: D000328:Adult; D000368:Aged; D001249:Asthma / Q000503:physiopathology; D001991:Bronchitis / Q000503:physiopathology*; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008168:Lung / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D011656:Pulmonary Emphysema / Q000503:physiopathology; D012129:Respiratory Function Tests; D013183:Sputum / Q000032:analysis*; D014783:Viscosity