title: Antigenic study of Nicotiana tabacum and research on precipitins against tobacco antigens in the serum of smokers and nonsmokers.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000906:Antibodies / Q000032:analysis*; D000941:Antigens / Q000032:analysis*; D002648:Child; D006801:Humans; D007106:Immune Sera; D007122:Immunoelectrophoresis; D008875:Middle Aged; D010936:Plant Extracts; D010947:Plants, Toxic; D012907:Smoking; D014026:Nicotiana / Q000276:immunology*
chemical_list: D000906:Antibodies; D000941:Antigens; D007106:Immune Sera; D010936:Plant Extracts