Figure 1From: Protective efficacy of a broadly cross-reactive swine influenza DNA vaccine encoding M2e, cytotoxic T lymphocyte epitope and consensus H3 hemagglutininSchematic diagram of the construct design for two DNA vaccines. tPA: signal peptide of tissue plasminogen activator; (G4S)3: Gly-Gly-Gly-Gly-Ser-Gly-Gly-Gly-Gly-Ser-Gly-Gly-Gly-Gly-Ser linker.Back to article page