| Literature DB >> 7251154 |
B R Murphy, H F Maassab, F T Wood, R M Chanock.
Abstract
The A/Ann Arbor/6/60 cold-adapted (ca) donor virus had a 38 degrees C shutoff temperature when tested in MDCK tissue culture. ca recombinant viruses bearing all six "internal genes" of the A/Ann Arbor/6/60 ca donor virus and the surface antigens of wild-type virus can manifest a 1,000-fold difference in plaquing efficiency at 38 degrees C. These observations suggest that the A/Ann Arbor/6/60 ca donor genes that specify the temperature sensitive phenotype of the ca recombinants can undergo genetic modification during the production and passage of the recombinants. The NS gene in the ca recombinant virus could be inherited from either parent without influencing the level of temperature sensitivity of the ca recombinant.Entities:
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Year: 1981 PMID: 7251154 PMCID: PMC351536 DOI: 10.1128/iai.32.2.960-963.1981
Source DB: PubMed Journal: Infect Immun ISSN: 0019-9567 Impact factor: 3.441