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. 1977 Dec;24(3):836–845. doi: 10.1128/jvi.24.3.836-845.1977

Replication of Epstein-Barr virus: ultrastructural and immunofluorescent studies of P3HR1-superinfected Raji cells.

J M Seigneurin, M Vuillaume, G Lenoir, G De-Thé
PMCID: PMC516005  PMID: 201779

Abstract

We have studied by means of electron microscopy and immunofluorescence the different steps of the replication of the P3HR1 strain of Epstein-Barr virus in Raji cells. The virus entered the cell by fusion of the viral envelope with the plasma membrane, followed by the disintegration of the capsid. In some cases, the migration of nucleocapsids toward the nuclear membrane was observed. The synthesis of new virions began as early as 7 h after infection (in the case of a high multiplicity of infection [MOI]-800 particles per cell) and took place in low-electron-density areas of the nucleus. A viral envelope was acquired by budding either through the nuclear membrane or more often through membranes of the Golgi apparatus or cytoplasmic vacuoles. Comparing immunofluorescence and electron microscopic data a good correlation was found between the presence of early antigen and ultrastructurally altered cells, as well as between the presence of viral capsid antigen and virus-producing cells. With different MOIs, different types of viral cycles were observed: at a low MOI (less than or equal to 50 particles per cell), a nonproducer cycle was induced, with early antigen synthesis only; at a higher MOI (100 particles per cell), a transient production of a small amount of virions was observed, and at a high MOI (greater than or equal to 300 particles per cell), a productive cycle was the rule.

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

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