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Sodium butyrate strengthened the intestinal barrier. (A) Experimental design, (B) ileum H&E staining, magnification × 200, (C) ileum IHC staining, magnification × 400, (D) ileum Claudin-1, (E) ileum Occludin, (F) ileum ZO-1. ## p < 0.01 vs. the NC group. ** p < 0.01, *** p < 0.001 vs. the AD group.
