title: Total screening of blood donations for H.A.A. and anti-H.A.A.
mesh_terms: D000906:Antibodies / Q000032:analysis*; D001782:Blood Donors; D006509:Hepatitis B / Q000517:prevention & control; D006511:Hepatitis B Antigens / Q000032:analysis; D006515:Hepatitis B virus / Q000276:immunology*
chemical_list: D000906:Antibodies; D006511:Hepatitis B Antigens