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Kinetics of serum antibody response in mice. Sera from mice immunized intranasally (IN) or intraperitoneally (IP) with PVX-2F5E or WT PVX were evaluated by ELISA. Shown are IgG (A to D) and IgA (E and F) antibody responses specific for the H66 peptide. Each line represents the kinetics of the response of a single mouse. Antibody levels are expressed as OD405 values.
