Fig. 7From: Blocked conversion of Lactobacillus johnsonii derived acetate to butyrate mediates copper-induced epithelial barrier damage in a pig modelSchematic of the findings. L. johnsonii drove the normalization of the butyric acid transformation pathway, leading to homeostasis (L. johnsonii administration). In the dietary copper-rich piglet model (Copper-rich), high-copper-induced extinction of L. johnsonii and abnormal metabolism of acetate and butyrate, leading to epithelial barrier dysfunction. The schematic diagram was created with BioRender.comBack to article page