Effects of chronic bronchopulmonary disease and aging on human nasal secretion IgA concentrations.
D000367:Age Factors; D001991:Bronchitis / Q000276:immunology*; D006801:Humans; D007106:Immune Sera; D005779:Immunodiffusion; D009093:Mucus / Q000032:analysis / Q000276:immunology; D011233:Precipitin Tests; D011656:Pulmonary Emphysema / Q000276:immunology*; D005719:gamma-Globulins / Q000032:analysis*
D007106:Immune Sera; D005719:gamma-Globulins