title: Cigarettes pose dual threat in emphysema.
mesh_terms: D000818:Animals; D006224:Cricetinae; D006801:Humans; D008168:Lung / Q000201:enzymology; D010196:Pancreatic Elastase / Q000037:antagonists & inhibitors / Q000378:metabolism; D011656:Pulmonary Emphysema / Q000201:enzymology; D012907:Smoking; D000515:alpha 1-Antitrypsin / Q000008:administration & dosage
chemical_list: D000515:alpha 1-Antitrypsin; D010196:Pancreatic Elastase