title: Absence of Au antigen in faeces of patients with Au-positive sera.
mesh_terms: D005243:Feces / Q000382:microbiology*; D006506:Hepatitis A / Q000276:immunology / Q000382:microbiology*; D006511:Hepatitis B Antigens / Q000302:isolation & purification; D006515:Hepatitis B virus / Q000276:immunology*; D006801:Humans; D005779:Immunodiffusion; D007122:Immunoelectrophoresis
chemical_list: D006511:Hepatitis B Antigens