Fig. 7

Intestinal morphology and barrier analysis of piglets. A The morphology of jejunum and ileum villi was observed by SEM. B AB-PAS and PAS in colon. C Immunofluorescence images of the colon with MUC2 protein. Scale bars are shown in each picture. D The DAO and D-Lac in serums collected from the piglets of control, PDCoV, and FMT + PDCoV group. E The relative levels of protein and mRNA expression of ZO-1 and occludin in the jejunum (left) and colon (right). *p < 0.05; **p < 0.01