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. 2012 Mar 15;7(3):e32661. doi: 10.1371/journal.pone.0032661

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The influenza A virus segment 8 cRNA is shown with NS1 and NS2/NEP coding sequences boxed. The extended lines represent the 5′ and 3′ non-coding sequences. Bars (not drawn to scale) indicate sequences (see Materials and Methods) used to generate in vitro transcribed (IVT) RNAs.