title: Serum alpha 1 antitrypsin in pulmonary emphysema.
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011656:Pulmonary Emphysema / Q000097:blood* / Q000235:genetics; D019896:alpha 1-Antitrypsin Deficiency