title: A comparison of hepatitis B antigen and blood groups in African donors.
mesh_terms: D044383:Black People; D001782:Blood Donors; D001789:Blood Group Antigens; D006509:Hepatitis B / Q000097:blood; D006511:Hepatitis B Antigens / Q000302:isolation & purification*; D006801:Humans; D008297:Male; D015030:Zimbabwe
chemical_list: D001789:Blood Group Antigens; D006511:Hepatitis B Antigens