title: The effect of freezing, storing and thawing on the viscosity of sputum.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001249:Asthma; D001987:Bronchiectasis; D001991:Bronchitis; D002648:Child; D002908:Chronic Disease; D003080:Cold Temperature; D003550:Cystic Fibrosis; D005260:Female; D005615:Freezing; D006801:Humans; D008297:Male; D008875:Middle Aged; D009584:Nitrogen; D011309:Preservation, Biological; D012034:Refrigeration; D013183:Sputum / Q000502:physiology*; D013492:Suppuration; D013997:Time Factors; D014783:Viscosity
chemical_list: D009584:Nitrogen