Early protective effect of ischemic preconditioning on small intestinal graft in rats

Figure 1 Light micrographs of apoptotic cells detected by TUNEL method (original magnification ×400). A: In S group, TUNEL signals were only observed accidentally at villi tip. B: In SBT group, many TUNEL signals appeared at villi tip of the graft. C: In ISBT group, after IPC was carried out, TUNEL signals decreased significantly at villi tip of the graft.

Figure 2 Light and electron micrographs (LM and EM) of morphological change of epithelial basement membrane (BM) (LM, original magnification ×400, EM, original magnification ×20000). D and E: In S group, BM showed line-shaped, continuous normal structure. F and G: In SBT group, BM became disrupted and collapsed, even disappeared. H and I: In ISBT group, after IPC was function carried out, the lesion of BM was slighter, compared with that in SBT group.