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Grading criteria for histological evaluation of the kidneys
| Score | Description |
|---|---|
| 0 |
No treatment associated lesions |
| 1 |
Focal degenerative change including epithelial cell swelling, tissue hyperemia (congestion) |
| 2 |
Degenerative change accompanied by focal regions of individual epithelial cell necrosis |
| 3 | Focal coagulative or liquefactive necrosis (emulsification) with hemorrhage |
Samples with scores of 1 and above were considered to be injured.
