Research Article

Parenterally Administered Norovirus GII.4 Virus-Like Particle Vaccine Formulated with Aluminum Hydroxide or Monophosphoryl Lipid A Adjuvants Induces Systemic but Not Mucosal Immune Responses in Mice

Figure 2

Development of IgG (a) and IgG subtype antibodies (b, c) in mice immunized IM with 0.3 μg of GII.4 VLPs formulated with Al(OH)3 or MPLA or 10 μg of GII.4 VLPs alone. (a) Kinetics of NoV GII.4-specific total IgG antibodies in sera of mice immunized with the antigenic formulations at study weeks 0 and 3. Control mice received PBS only. Group mean OD490 values with standard error of the means of individual tail blood samples collected at indicated study weeks and termination sera at week 5 are shown. End-point titrations of anti-GII.4 IgG1 (b) and IgG2a (c) antibodies in termination sera at week 5. Mean titration curves with standard errors of the mean of the experimental groups are shown.
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