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The ORFs are indicated with light blue arrows. The primers used in the DIPS-PCR are represented with half arrows. The inner circle shows the strategies employed, and the outer circle shows the final clones. Putative binding sites for viral proteins and cellular factors are shown as follows: E2 binding site, E2BS (▾); E1 binding site, E1BS (Δ); TATA-box (▪); Polyadenylation signal (•).
