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J Virol. 1983 October; 48(1): 1-9

Closed circular viral DNA and asymmetrical heterogeneous forms in livers from animals infected with ground squirrel hepatitis virus.

ABSTRACT

To identify possible intermediates in the replication of ground squirrel hepatitis virus, we characterized the major forms of intracellular virus-specific DNA in the livers of infected ground squirrels. A variety of DNA species were found: covalently closed circular molecules, relaxed circular molecules, and a heterogeneous collection of molecules that migrated ahead of closed circular DNA during agarose gel electrophoresis. The heterogeneous DNA was at least partly single stranded, consisted of minus strands in a greater than eight-fold mass excess of plus strands, and was tightly associated with protein.

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