Takayanagi, M Comparison of envelope and precore/core variants of hepatitis B virus (HBV) during chronic HBV infection. [electronic resource] - Virology Sep 1993 - 138-45 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0042-6822 Standard No.: 10.1006/viro.1993.1462 doi Subjects--Topical Terms: AdultAmino Acid SequenceAntigenic Variation--geneticsBase SequenceCloning, MolecularDNA, ViralFemaleFollow-Up StudiesGenes, ViralGenetic VariationHepatitis B--immunologyHepatitis B Core Antigens--bloodHepatitis B e Antigens--bloodHepatitis B virus--immunologyHepatitis, Chronic--immunologyHumansMaleMolecular Sequence DataPolymerase Chain Reaction