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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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A rapid method for immunotitration of influenza viruses using flow cytometry.

Reliable assays for accurate titration of influenza virus in infectious samples are pivotal to both influenza research and vaccine development. A titration assay adopted commonly for this purpose is the plaque assay on Madin-Darby canine kidney (MDCK) cells, despite it being time and labour consuming. A novel assay is described for titration of influenza viruses based on the detection of intracellular viral nucleoprotein ( NP) by fluorescence-activated cell sorting (FACS). By using a panel of viruses of different type, subtype and origin, it is demonstrated that there is a mathematical correlation between titres measured by immunotitration and by classical plaque assay on MDCK cells. Moreover, the availability of NP antibodies specific for type A or type B influenza virus ensures the specificity of the assay. Based on speed, accuracy and specificity, it is concluded that the FACS-based immunotitration of influenza virus represents a valid and efficient alternative to the classical plaque assay.[1]

References

  1. A rapid method for immunotitration of influenza viruses using flow cytometry. Lonsdale, R., Pau, M.G., Oerlemans, M., Ophorst, C., Vooys, A., Havenga, M., Goudsmit, J., UytdeHaag, F., Marzio, G. J. Virol. Methods (2003) [Pubmed]
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