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The relative mRNA expression levels of intestinal epithelium integrity-related genes in the small intestine of weaned piglets. (A) Occludin, (B) ZO-1, (C) Claudin 2, and (D) Claudin 5. Data are presented as the means ± SD (n = 6 per group). Statistical significance was determined using Student’s t-tests to compare differences between two groups. *P < 0.05, **P < 0.01.
