title: Evidence for the presence of repeating antigenic determinants in the major polypeptides derived from hepatitis B surface antigen.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000939:Epitopes; D006168:Guinea Pigs; D006514:Hepatitis B Surface Antigens / Q000276:immunology*; D007111:Immunity, Cellular; D008970:Molecular Weight; D014764:Viral Proteins / Q000276:immunology*
chemical_list: D000939:Epitopes; D006514:Hepatitis B Surface Antigens; D014764:Viral Proteins