Figure 5: TUNEL staining and the apoptotic index of spinal cord neurons. (a) In the UTI + IR group, the number of apoptotic cells was far less than that in the IR group, which suggested that UTI decreased cell apoptosis caused by IR. (b) In the Sham group, a very few apoptotic cells were found. (c) In the IR group, the apoptotic cells increased significantly. Compared with IR group (). Compared with Sham group (). Values are the means ± SD, per group.