Figure 2
From: Cross-reactive human B cell and T cell epitopes between influenza A and B viruses
Comparison of the NA protein amino acid sequences among influenza A and B viruses. Multiple alignment was performed by CLUSTALW (available at http://www.genome.jp/tools/clustalw/). Protein accession numbers are shown in brackets next to influenza virus strain names. The conserved peptide studied by Gravel et al. [51] is underlined, and amino acid residues considered to be involved in the enzymatic activity [52] are shaded.