title: Neuraminic acid content of sputum in chronic bronchitis.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001991:Bronchitis / Q000378:metabolism*; D002908:Chronic Disease; D006801:Humans; D046911:Macromolecular Substances; D008297:Male; D008875:Middle Aged; D009438:Neuraminic Acids / Q000032:analysis*; D011656:Pulmonary Emphysema / Q000378:metabolism; D012463:Saliva / Q000032:analysis; D012621:Seasons; D012907:Smoking; D013147:Spirometry; D013183:Sputum / Q000032:analysis*; D013492:Suppuration / Q000378:metabolism; D014783:Viscosity
chemical_list: D046911:Macromolecular Substances; D009438:Neuraminic Acids