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HBV Replication Cycle

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Description

HBV (Hepatitis-B Virus) belongs to a family of closely related DNA viruses called the Hepadnaviruses. Included in this family are the WHV (Woodchuck Hepatitis Virus), the DHBV (Duck Hepatitis-B Virus) and several other avian and mammalian variants. Hepadnaviruses have a strong preference for infecting liver cells, but small amounts of hepadnaviral DNA can be found in kidney, pancreas, and mononuclear cells. However, infection at these sites is not linked to extra hepatic disease (Ref.1). The HBV nucleocapsid contains a relatively small and partially duplex 3.2 Kb circular DNA, viral polymerase and core protein. The genome has only four long open reading frames. The preS–S (presurface–surface) region of the genome encodes the three viral surface antigens by differential initiation of translation [...]

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