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PRV strains used in this study. Sequences of PRV vaccine strain Bartha and PRV wild-type strain Becker are shown. The PRV genome is divided into two regions: the unique long and the unique short. Bartha contains mutations in the gC, UL21, and gM genes in the unique long region and a large deletion spanning the gI, gE, Us9, and Us2 genes in the unique short region.
