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Localization of the Us3 protein in Bartha-, PRV632-, and Becker-infected cells by indirect immunofluorescence microscopy. PK15 cells were grown on glass coverslips and infected with Bartha, PRV632, and Becker at an MOI of 10 for 2 or 5 h. Cells were fixed and stained with rabbit antiserum to Us3 followed by an Alexa-488-conjugated secondary antibody.
