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Comparative Study
. 1980 Jan;33(1):494-506.
doi: 10.1128/JVI.33.1.494-506.1980.

Correlation between cell killing and massive second-round superinfection by members of some subgroups of avian leukosis virus

S K Weller, A E Joy, H M Temin
Comparative Study

Correlation between cell killing and massive second-round superinfection by members of some subgroups of avian leukosis virus

S K Weller et al. J Virol. 1980 Jan.

Abstract

Avian leukosis viruses of subgroups B, D, and F are cytopathic for chicken cells, whereas viruses of subgroups A, C, and E are not. The amounts of unintegrated linear viral DNA in cells at different times after infection with cytopathic or noncytopathic viruses were determined by hybridization and transfection assays. Shortly after infection, there is a transient accumulation of unintegrated linear viral DNA in cells infected with cytopathic avian leukosis viruses. By 10 days after infection, the majority of this unintegrated viral DNA is not present in the infected cells. The transient cytopathic effect seen in these infected cells also disappears by this time. Low amounts of unintegrated linear viral DNA persist in these cells. Cells infected with noncytopathic viruses do not show this transient accumulation of unintegrated viral DNA. Cells infected with cytopathic viruses and subsequently grown in the presence of neutralizing antibody do not show the transient accumulation of unintegrated viral DNA or cytopathic effects. These results demonstrate a correlation between envelope subgroup, transient accumulation of unintegrated linear viral DNA, and transient cell killing by avian leukosis viruses. The cell killing appears to be the result of massive second-round superinfection by the cytopathic avian leukosis viruses.

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