Virotag® Reagents

Virotag^® AB and Virotag^® DY reagents are labeling reagents for specific and precise quantification of viruses. The Virotag^® AB reagent family utilizes a fluorescently labeled, high-affinity antibody which binds to a unique viral epitope. Quantification of viruses using Virotag^® is independent of the presence of nucleic acid. The Virotag^® DY reagents stains viral genomes and viral envelope proteins with a combination of two fluorogenic dyes. When fluorescent emission is simultaneously observed in both channels, this ‘simultaneous event’ is counted as one intact particle.