title: Hepatitis-associated antigen around the world.
mesh_terms: D000349:Africa; D001769:Blood / Q000382:microbiology; D001782:Blood Donors; D001803:Blood Transfusion; D005060:Europe; D006509:Hepatitis B / Q000382:microbiology; D006511:Hepatitis B Antigens; D006515:Hepatitis B virus; D006801:Humans; D014481:United States
chemical_list: D006511:Hepatitis B Antigens