From: Clinicopathologic assessment and imaging of tauopathies in neurodegenerative dementias
 | Tau repeat | Filaments (width) | Periodicity | Reference |
---|---|---|---|---|
AD | 3R ≈ 4R | PHF (10 to 20 nm) >> SF (~15 nm) | 80 nm | [6] |
PSP | 4R >3R | SF (15Â nm); rare twisted filament (15 to 30Â nm) | >100 nm | [7] |
CBD | 4R >3R | SF >> twisted filament (15 to 30 nm) | 160 nm | [8] |
PiD | 3R >4R | SF (15 nm) >> twisted filament (15 to 30 nm) | 160 nm | [9] |