paired helical filament

initialism: PHF
https://doi.org/10.1351/goldbook.11986
Describing the aggregation of hyperphosphorylated tau protein into neurofibrillary tangles.
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 894 [Terms] [Paper]