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Defective virions of simian adenovirus 7 produced by one passage at high multiplicity of infection

Authors
Journal
Virology
0042-6822
Publisher
Elsevier
Publication Date
Volume
91
Issue
1
Identifiers
DOI: 10.1016/0042-6822(78)90367-7
Disciplines
  • Medicine

Abstract

Abstract An assay is described for the rapid microtitration of simian adenovirus 7 (SA7) particles capable of inducing adenovirus CPE (rounded, swollen cells). Utilizing the assay for cytopathic particles, it was found that only one passage of standard SA7 at high m.o.i. results in virus stocks containing an excess of noninfectious cytopathic particles. These stocks also contain an excess of defective virions which retain the ability to enhance the replication of human adenovirus type 5 during mixed infection of monkey cells. SA7 stocks produced on two SV40-transformed simian cell lines contained larger fractions of these defective virions than stocks produced on normal simian cell lines. Autointerference activity was not observed in SA7 stocks containing an excess of defective cytopathic particles nor were there detectable levels of shortened viral genomes.

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