title: Factors related to serum and secretory immunoglobulin concentrations in patients with chronic obstructive pulmonary disease.
mesh_terms: D000305:Adrenal Cortex Hormones / Q000627:therapeutic use; D000367:Age Factors; D002908:Chronic Disease; D003165:Complement System Proteins / Q000032:analysis*; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis*; D008173:Lung Diseases, Obstructive / Q000188:drug therapy / Q000276:immunology*
chemical_list: D000305:Adrenal Cortex Hormones; D007136:Immunoglobulins; D003165:Complement System Proteins