title: Investigations on the presence of Australia antigen in hepatitis contacts.
mesh_terms: D002353:Carrier State / Q000276:immunology*; D003168:Complement Fixation Tests; D006509:Hepatitis B / Q000276:immunology / Q000382:microbiology / Q000517:prevention & control; D006511:Hepatitis B Antigens / Q000302:isolation & purification; D006515:Hepatitis B virus / Q000276:immunology*; D006801:Humans; D005779:Immunodiffusion; D012572:School Health Services
chemical_list: D006511:Hepatitis B Antigens