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Serum anti-DTx IgG profile of mice immunized orally with different formulations. The serum was collected after 14, 28, 42 and 56 days of boosting. Values are expressed as mean ± SD (n = 5). Multiple comparisons were made using one-way anova followed by post hoc analysis using Dunnett's test. Statistical significance was considered at P < 0.05.
