title: Hepatitis B antigen in families of blood donors.
mesh_terms: D001771:Blood Banks; D001782:Blood Donors; D001789:Blood Group Antigens; D002353:Carrier State; D004197:Disease Reservoirs; D006509:Hepatitis B / Q000235:genetics; D006511:Hepatitis B Antigens / Q000302:isolation & purification*; D006801:Humans; D009864:Ontario; D012011:Red Cross
chemical_list: D001789:Blood Group Antigens; D006511:Hepatitis B Antigens