title: Serum immunoglobulin levels in patients suffering from chronic and recurrent chest infections.
mesh_terms: D000293:Adolescent; D000328:Adult; D001987:Bronchiectasis / Q000276:immunology*; D001991:Bronchitis / Q000276:immunology*; D002908:Chronic Disease; D005260:Female; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007136:Immunoglobulins / Q000032:analysis*; D008297:Male; D008875:Middle Aged; D011014:Pneumonia / Q000276:immunology*; D012008:Recurrence
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007136:Immunoglobulins