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Histopathological examination of tongue lesions in various 4NQO-treated mice groups
| Group | Mice No. | Normal epithelial | Hyperplasia | Dysplasia | Squamous cell carcinoma | ||
|---|---|---|---|---|---|---|---|
| Mild | Moderate | Severe | |||||
| Vehicle | 8 | 0 | 1 (12.5%) | 1 (12.5%) | 1 (12.5%) | 1 (12.5%) | 4 (50%) |
| VP | 8 | 0 | 2 (25%) | 1 (12.5%) | 2 (25%) | 2 (25%) | 1 (12.5%) |
