Fig. 1From: Process development for pandemic influenza VLP vaccine production using a baculovirus expression systemProduction of influenza H7N9-TW VLPs in the baculovirus expression vector system. cDNAs of the HA, NA, and M1 proteins were derived from the sequences of the Influenza A/Taiwan/1/2013 (H7N9) virus strain by polymerase chain reaction (PCR). The amplified DNA fragments were subcloned into the corresponding sites in a baculovirus expression vectorBack to article page