title: The clinical significance of the delta antigen-antibody system in hepatitis B infections.
mesh_terms: D000818:Animals; D006509:Hepatitis B / Q000276:immunology* / Q000635:transmission; D006514:Hepatitis B Surface Antigens / Q000276:immunology*; D006515:Hepatitis B virus / Q000472:pathogenicity; D006801:Humans; D002679:Pan troglodytes / Q000382:microbiology; D014774:Virulence
chemical_list: D006514:Hepatitis B Surface Antigens