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Schematic diagram of the EAV genome organization and expression. The regions of the genome specifying the leader (L) sequence, the two large replicase ORFs (ORFs 1a and 1b), and the structural genes are indicated. The nested set of seven EAV mRNAs (genome and sg mRNAs 2–6) is depicted below. The black boxes in the genomic RNA indicate the position of leader and body TRSs.
