title: Frequency of Australia antigen in blood donors in Singapore.
mesh_terms: D044466:Asian People; D001782:Blood Donors; D001789:Blood Group Antigens; D006386:Hemagglutination Tests; D006509:Hepatitis B / Q000453:epidemiology*; D006511:Hepatitis B Antigens; D006515:Hepatitis B virus; D006801:Humans; D005779:Immunodiffusion; D012846:Singapore
chemical_list: D001789:Blood Group Antigens; D006511:Hepatitis B Antigens