Fig. 5
From: Influence of PapMV nanoparticles on the kinetics of the antibody response to flu vaccine
PapMV nanoparticles protect mice from an influenza virus challenge from day 10 post-immunization. Vaccinated mice were challenged with a lethal dose of influenza virus [A/WSN/33 (H1N1)] at different time points; 5 (a), 7 (b) 10 (c), (d) 14 days post-immunization. Mice were euthanized when their weight was equal to, or lower than, 20 % of their initial weight. Kaplan–Meier survival curves were analysed by the log rank test (**p < 0.01)