Figure 1From: PapMV nanoparticles improve mucosal immune responses to the trivalent inactivated flu vaccine Structure of the PapMV nanoparticles. PapMV nanoparticles were observed with a transmission electron microscope and by dynamic light scattering. PapMV nanoparticles have a filamentous rod-shape structure (A) with an average length of 100 nm as shown by dynamic light scattering (B).Back to article page