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Difference between IgG2a or IgG2c and IgG1 levels in postinfection sera. (a) Infection dose of 1 × 106 tachyzoites. (b) Infection dose of 5 × 106 tachyzoites. ∗Indicates a statistically significant difference between the groups (P < 0.05). ∗∗Indicates a highly significant difference between the groups (P < 0.01).
