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Schematic diagram of plasmid designed to direct inducible FHV RNA1 replication. The transcriptional start site and self-cleavage site of the RNA transcript are indicated by vertical arrows. The nucleotide sequence of the junctions between the promoter, cDNA, and ribozyme are shown below the plasmid diagram. HRE, hormone response elements; Pr, minimal RNA pol II promoter; Rz, HDV antigenomic ribozyme; T, T7 terminator.
