title: Letter: Lack of effect of HBAg-positive sera on tobacco plants.
mesh_terms: D000906:Antibodies / Q000032:analysis; D005006:Ethnicity; D006511:Hepatitis B Antigens / Q000032:analysis*; D006801:Humans; D010935:Plant Diseases; D010947:Plants, Toxic; D012703:Serotyping; D014026:Nicotiana
chemical_list: D000906:Antibodies; D006511:Hepatitis B Antigens