Abstract
Immunostained plaque assay based on the specific antibody binding to viral antigen enables the detection and titration of virus infectivity, especially for viruses that could not form plaques using the classical crystal violet or neutral red staining methods. Here we describe the application of this method to quantify viral titers of wild-type West Nile virus (WNV-WT) and replication-defective WNV-ΔNS1 virus.
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