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. 2015 Feb 3;12:10. doi: 10.1186/s12985-015-0243-2

Figure 2.

Figure 2

Alignment of HA1 amino acid sequences of two H3N2 CIVs and representative H3N2 human and swine influenza viruses. Antigenic sites are indicated by solid boxes (lower case letters indicate discrete antigenic sites), residues in yellow denote the receptor-binding sites, and residues in grey represent the potential glycosylation sites. The cleavage sites are in the dotted box.