Summary
Incomplete influenza A virus (fowl plague Dobson strain) was prepared by undiluted passage in primary chick embryo fibroblast cells. Analysis of released virus RNA revealed a deficiency in RNA segments 1–3, characteristic of incomplete virus formation. The virus yield from a high multiplicity infection with standard virus always showed this deficiency, even when analysed as early as 6 hours post-infection, whereas infection at low multiplicity gave rise to virus indistinguishable in RNA composition from the parent virus.
The relative amounts of intracellular, non-polyadenylated, complementary RNA (template RNA) were found to reflect accurately the eventual RNA composition of released virus, and were altered in phase with PFU:HAU ratio, throughout a von Magnus cycle.
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Carter, M.J., Mahy, B.W.J. Synthesis of RNA segments 1–3 during generation of incomplete influenza A (fowl plague) virus. Archives of Virology 73, 109–119 (1982). https://doi.org/10.1007/BF01314720
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DOI: https://doi.org/10.1007/BF01314720