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Number of FTLD-U cases falling into each frontal cortex pathology subtype based on routine and enhanced immunohistochemistry.
| Enhanced IHC method | |||||||
|---|---|---|---|---|---|---|---|
| Unclassifiable | No frontal pathology | Type 1 | Type 2 | Type 3 | Type 4 | ||
| Routine IHC | Unclassifiable | 0 | 0 | 0 | 0 | 0 | 0 |
| No frontal pathology | 3 | 0 | 1 | 1 | 0 | 0 | |
| Type 1 | 1 | 1 | 8 | 0 | 0 | 0 | |
| Type 2 | 3 | 0 | 3 | 9 | 4 | 0 | |
| Type 3 | 2 | 0 | 1 | 1 | 21 | 0 | |
| Type 4 | 1 | 0 | 0 | 1 | 0 | 0 | |
