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Levels of serum IgG and IgG subclasses in immunized mice. (A) Antigen-specific IgG levels were detected by ELISA in the sera of mice, as indicated after the final immunizations with PvTRAg-26, ***P < 0.001. (B) Serum IgG subclass pattern in PvTRAg-26-immunized mice, ***P < 0.001.
