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Classification of acute rejection in allograft group post transplantation
| Grade I | Grade II | Grade III | Grade IV | |
| 1 d | 5 | 1 | ||
| 4 d | 4 | 2 | ||
| 7 d | 5 | 1 | ||
| 10 d | 6 |
Nakhleh Classification Criterion, Grade I: no rejection present, Grade II: mild lymphoplasmacellular infiltration or endothelialitis, Grade III: moderate lymphoplasmacellular infiltration or arteritis/vasculitis, Grade IV: severe lymphoplasmacellular infiltration or fibrinoid necrosis.
