Figure 5From: Attenuation of the virulence of a recombinant influenza virus expressing the naturally truncated NS gene from an H3N8 equine influenza virus in mice The alignment of the amino acid sequences of the NS1 gene from KYG11, MA63, and PR/8 viruses. The 23-nt deletion results in a frameshift, generating a premature stop codon and a truncated NS1 protein.Back to article page