Score | Congestion (%) | Vacuolar degeneration (%) | Necrosis (%) |
---|---|---|---|
0 | None | None | None |
1 | Very slight (10) | Very slight (10) | Single-cell necrosis |
2 | Slight (11–30) | Slight (11–30) | Slight (< 30) |
3 | Moderate (31–60) | Moderate (31–60) | Moderate (31–60) |
4 | Severe (> 60) | Severe (> 60) | Severe (> 60) |