Figure 2.

Histology changes in the kidney of different treatment groups. Kidney tissues from rats of all groups were fixed, embedded, sectioned, and stained with hematoxylin and eosin. A-C. Representative histology specimens from the young group, aged group, young I/R group, and aged I/R group. Original magnification: 200×. Histology changes were observed 24 h after renal I/R injury and included tubular dilation or atrophy and interstitial expansion with edema, inflammatory infiltrate, or fibrosis. D. Injury scores in different groups (n = 10). Data are expressed as mean ± SD. *P < 0.05 vs. the aged I/R group; #P < 0.05 vs. the aged group.