Fig. 1From: Multi-antigen avian influenza a (H7N9) virus-like particles: particulate characterizations and immunogenicity evaluation in murine and avian modelsA schematic diagram of H7N9 VLP expression. The genes HA, NA, and M1 were cloned into three recombinant baculoviruses, respectively. Sf9 cells were co-infected by the three recombinant baculoviruses, and the VLPs that assembled HA, NA, and M1 were harvested in the Sf9 culture supernatantBack to article page