title: Roentgenographic study of chronic obstructive pulmonary disease by alpha1-antitrypsin phenotype.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008173:Lung Diseases, Obstructive / Q000000981:diagnostic imaging* / Q000235:genetics; D008297:Male; D008875:Middle Aged; D010641:Phenotype; D011859:Radiography; D000515:alpha 1-Antitrypsin / Q000235:genetics*
chemical_list: D000515:alpha 1-Antitrypsin