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- W1974914707 abstract "Two strains of reovirus were propagated in Vero cells grown in stationary or microcarriers cultures. Vero cells grown as monolayers on T-flasks or in spinner cultures of Cytodex-1 or Cultispher-G microcarriers could be infected with reovirus serotype 1, strain Lang (T1L), and serotype 3, strain Dearing (T3D). A regime of intermittent low speed stirring at reduced culture volume was critical to ensure viral infection of cells in microcarrier cultures. The virus titre increased by 3 to 4 orders of magnitude over a culture period of 150 h. Titres of the T3D reovirus strain were higher (43%) compared to those of the T1L strain in all cultures. Titres were significantly higher in T-flask and Cytodex-1 microcarrier cultures compared to Cultispher-G cultures with respect to either reovirus type. The viral productivity in the microcarrier cultures was dependent upon the multiplicity of infection (MOI) and the cell/bead ratio at the point of infection. A combination of high MOI (5 pfu/cell) and high cell/bead loading (>400 for Cytodex-1 and >1,000 for Cultispher-G) resulted in a low virus productivity per cell. However, at low MOI (0.5 pfu/cell) the virus productivity per cell was significantly higher at high cell/bead loading in cultures of either microcarrier type. The maximum virus titre (8.5 × 109 pfu/mL) was obtained in Cytodex-1 cultures with a low MOI (0.5 pfu/cell) and a cell/bead loading of 1,000. The virus productivity per cell in these cultures was 4,000 pfu/cell. The lower viral yield in the Cultispher-G microcarrier cultures is attributed to a decreased accessibility of the entrapped cells to viral infection. The high viral productivity from the Vero cells in Cytodex-1 cultures suggests that this is a suitable system for the development of a vaccine production system for the Reoviridae viruses. © 1999 John Wiley & Sons, Inc. Biotechnol Bioeng 62: 12–19, 1999." @default.
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- W1974914707 date "1999-01-05" @default.
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- W1974914707 title "Production of reovirus type-1 and type-3 from Vero cells grown on solid and macroporous microcarriers" @default.
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- W1974914707 doi "https://doi.org/10.1002/(sici)1097-0290(19990105)62:1<12::aid-bit2>3.0.co;2-g" @default.
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