Protective effect of bone marrow mesenchymal stem cells in intestinal barrier permeability after heterotopic intestinal transplantation

Figure 3 Ultrastructural characteristics of intestinal mucosa and tight junctions following heterotopic intestinal transplantation (magnification × 30000). A: Epithelial cells and tight junctions (TJs) (arrows) were intact in group A; B: Intestinal microvilli and TJs (arrows) were disrupted, and some microvilli were loose; C: Organelles were swollen with reduced electron density at day 5 after transplantation in group B; D: Microvilli and mitochondria of the endothelial cells were almost normal and TJs (arrow) were not disrupted at day 5 after transplantation in group C.