title: Letter: Action of hepatitis-B antigen on Nicotiana sylvestris and Vigna sinensis.
mesh_terms: D004777:Environment; D006509:Hepatitis B / Q000276:immunology; D006511:Hepatitis B Antigens; D009336:Necrosis / Q000209:etiology; D010935:Plant Diseases; D010944:Plants; D010947:Plants, Toxic; D014026:Nicotiana
chemical_list: D006511:Hepatitis B Antigens