title: Letter: Detection of HBsaG by passive haemagglutination test.
mesh_terms: D001771:Blood Banks; D001782:Blood Donors; D002353:Carrier State; D006386:Hemagglutination Tests; D006511:Hepatitis B Antigens / Q000302:isolation & purification*; D006801:Humans; D008131:London
chemical_list: D006511:Hepatitis B Antigens