title: PiM subtypes in COPD.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004587:Electrophoresis, Agar Gel; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000503:physiopathology*; D008875:Middle Aged; D000515:alpha 1-Antitrypsin / Q000145:classification*
chemical_list: D000515:alpha 1-Antitrypsin