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. 1976;50(1-2):147-57.
doi: 10.1007/BF01318009.

Accidental persistent infection of cell lines by Newcastle disease virus, showing three unusual features--defective neuraminidase, temperature sensitivity and intranuclear inclusions

G Fraser, H H Edwards, M S McNulty, J M Ruben

Accidental persistent infection of cell lines by Newcastle disease virus, showing three unusual features--defective neuraminidase, temperature sensitivity and intranuclear inclusions

G Fraser et al. Arch Virol. 1976.

Abstract

A persistent, defective infection by an unknown strain of Newcastle disease virus (NDV) appeared accidentally in established lines of pig, ox and sheep kidney cells. Virus particles released from the persistently infected cells were not infectious and were deficient in neuraminidase activity. Synthesis of some of the virus-specified proteins in the persistently infected cells was temperature-sensitive. Co-cultivation of mixed populations of carrier cells and healthy chick embryo cells induced cell fusion with the formation of multinucleate heterokaryons and intra-nuclear inclusions. The development of inclusions in the chicken nuclei was not accompanied by 'rescue' of infectious NDV.

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