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. 1975 Oct;16(4):951–958. doi: 10.1128/jvi.16.4.951-958.1975

Interfering passages of Sindbis virus: concomitant appearance of interference, morphological variants, and trucated viral RNA.

R E Johnston, D R Tovell, D T Brown, P Faulkner
PMCID: PMC354757  PMID: 1165599

Abstract

Serial passage of Sindbis at high multiplicities of infection resulted in cyclical variations in virus titer. Decreases in virus titer were correlated with the appearance of smaller-sized virions, interference and truncated viral RNA. The smaller particles were 37 nm in diameter, exclusive of the hemagglutinin spikes as compared with a diameter of 50 nm for standard virions. Passages which contained 37-nm partilces also interfered with infectious center formation by standard, plaque-purified virus. Polyacrylamide gel analysis of RNA isolated from virions present in interfering passages demonstrated the sequential appearance of three RNA species smaller than standard RNA with approximate molecular weights of 3.3 X 106, 2.7 X 106, and 2.2 X 106. The 3.3 X 106 RNA was evident in passage 5, by passage 8 both the 3.3 X 106 and 2.7 X 106 RNAs were present, and by passage 13 all three were present with the 2.2 X 106 RNA predominating.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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