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Schematic diagrams of the genomic structure of wild-type HSV-1(F) and the relevant domains of the recombinant viruses used in this study. Line 1, the wild-type HSV-1(F) genome (UL and US, unique long and unique short regions, respectively); line 2, domains of the UL30 to UL35 genes; line 3, domains of the UL31 and UL34 genes; lines 4, 5, and 6, recombinant viruses with mutations in the UL31 gene; line 7, recombinant virus with a mutation in the UL34 gene.
