Trans-complementation among naturally occurring deletion mutants of hepatitis B virus and integrated viral DNA for the production of viral particles with mutant genomes in hepatoma cell lines.

Abstract excerpt

Cultured hepatoma cells (HepG2) were cotransfected with two different plasmids carrying a head-to-tail dimer of recombinant hepatitis B virus (HBV) DNA cloned from deletion mutants isolated from the circulation of persistently infected hosts. They were tested for the secretion of viral particles with mutant genome encapsidation. A recombinant plasmid defective in the S gene and one defective in both the C and P...

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