Figure 6. ELISA Titers for Anti-S and Anti-HA igG in Vaccinated Animals.

(A) Log₁₀ half-maximum ELISA titers for anti-S IgG antibody in aged mice vaccinated with VRP-S or VRP-S+N when young (Table 1, experiment 2) or senescent (Table 1, experiment 4). Values represent mean values, and error bars indicate standard deviation.

(B) Log₁₀ half-maximum ELISA titers for anti-HA IgG antibody in aged mice vaccinated when young (experiment 2) or senescent (experiment 4).