Abstract
Frequent recombination occurs during replication in all retroviruses examined. This increases the genetic variation in the retroviral population and may be of importance in the evolution of the virus. Maedi-visna virus (MVV), a retrovirus of sheep, has a highly variable envelope gene. In a previous experiment, 20 sheep were infected with an uncloned strain of MVV and virus was isolated at regular intervals for 7 years. We sequenced the envelope genes of a number of these strains and found evidence for recombination that may have contributed to the observed high frequency of antigenic variants.
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Andrésdóttir, V. Evidence for Recombination in the Envelope Gene of Maedi-visna Virus. Virus Genes 27, 5–9 (2003). https://doi.org/10.1023/A:1025105116342
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DOI: https://doi.org/10.1023/A:1025105116342