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Schematic diagrams of the PRV recombinants rPRVTJ-delgE/gI-EGFP (A) and rPRVTJ-delgE/gI-E2 (B). The coding regions of glycoprotein I (gI) and glycoprotein E (gE) genes are deleted, and an EGFP or E2 expression cassette is inserted in the deleted region. hCMV, human cytomegalovirus; polyA, SV40 polyadenylation signal.
