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. 1987 Feb;61(2):419–425. doi: 10.1128/jvi.61.2.419-425.1987

Isolation and characterization of recombinants between attenuated and virulent aphthovirus strains.

A T Giraudo, A Sagedahl, I E Bergmann, J L La Torre, E A Scodeller
PMCID: PMC253965  PMID: 3027372

Abstract

A guanidine-resistant mutant of the attenuated strain of aphthovirus type 01 strain Campos and the original wild-type strain were crossed to generate recombinant viruses. Two independently derived recombinant viruses were isolated. One isolate (RI) contained the P1 (structural proteins) gene region of attenuated strain and P3 (polymerase precursor) gene region of the wild-type strain. The other isolate (RII) had a genomic structure complementary to that of RI, this is, P1 of the wild-type strain and P3 of the attenuated virus. Recombinant RII inherited some in vitro phenotypic markers that were characteristic of the attenuated strain, whereas the RI recombinant had in vitro behavior that was similar to that of the wild-type strain. The data obtained suggest that the polymerase precursor (P3) of the attenuated strain (01 Campos) could be involved in the determination of the attenuated phenotype for fetal bovine kidney cells and, eventually, for cattle.

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Selected References

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