Acid fibroblast growth factor reduces rat intestinal mucosal damage caused by ischemia-reperfusion insult

Figure 3 The expression of PCNA protein in sham-operated control group (A), 6 h after ischemia-reperfusion in R group (B) and 6 h after ischemia-reperfusion in A group (C) (200×). PCNA was weakly expressed in sham-operated control group, with positive particles mostly distributing in the nuclei of the lower third of crypt cells. Protein contents of PCNA were significantly increased in villi and crypts at 6 h after reperfusion compared with control group. The contents of PCNA increased remarkably in villi and crypts at 6 h after reperfusion in A group vs R group.