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L-flank and R-flank, VACV strain L-IVP genome fragments flanking vgf gene upstream and downstream respectively; Lact – lactaptin gene; P7.5synth and PE/L – synthetic VACV promoters; P7.5k – native VACV promoter; L-tk and R-tk, VACV strain L-IVP genome fragments flanking tk gene upstream and downstream respectively; GM-CSF – human GM-CSF gene.
