title: Variants of hepatitis B virus.
authors.affiliation: WHO Collaborating Centre for Reference and Research on Viral Diseases, Royal Free Hospital School of Medicine, London, UK.
authors.forename: T J
authors.initials: TJ
authors.lastname: Harrison
authors.forename: A J
authors.initials: AJ
authors.lastname: Zuckerman
mesh_terms: D005814:Genes, Viral / Q000235:genetics; D006514:Hepatitis B Surface Antigens / Q000032:analysis / Q000235:genetics*; D006515:Hepatitis B virus / Q000235:genetics*; D006801:Humans
chemical_list: D006514:Hepatitis B Surface Antigens