Abstract
IT has been shown that in apparently pure strains of some animal viruses the buoyant density of the infective particles may differ1. A range of densities is usually demonstrated with two infectivity peaks which indicate a density difference of about 0.02 g/ml. This heterogeneity is explained by assuming that a varying amount of host lipid or other material is adventitiously incorporated in the virion during the assembly process.
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References
Horzinek, M., J. Bact., 92, 1723 (1966).
Russell, B., thesis, Univ. Cape Town (1965).
Polson, A., and van Regenmortel, M. H. V., Virology, 15, 397 (1961).
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RUSSELL, B. Buoyant Density of African Horsesickness Virus. Nature 215, 983–984 (1967). https://doi.org/10.1038/215983a0
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DOI: https://doi.org/10.1038/215983a0
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