| Numerical assessment | 0 | 1 | 2 | 3 | 4 |
|---|---|---|---|---|---|
| Sinusoidal congestion | None | Minimal | Mild | Moderate | Severe |
| Vacuolation | None | Minimal | Mild | Moderate | Severe |
| Necrosis | None | Single cell | 30% | 60% | >60% |
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