| Type | CD3-ε-epitope positive area of one Purkinje cell | Staining score |
| 1 | No positive-staining area | 0 |
| 2 | Cell body | 1 |
| 3 | Cell body and the primary dendrite | 2 |
| 4 | Cell body, the primary and the secondary dendrites | 3 |
| 5 | Cell body, the primary, the secondary and the tertiary dendrites | 4 |