Filaments 7-11 nm in diameter found in the cytoplasm of all cells. Many specific proteins belong to this group, e.g., desmin, vimentin, prekeratin, decamin, skeletin, neurofilin, neurofilament protein, and glial fibrillary acid protein.

Synonyms: Proteins, Intermediate Filament, 0, Fibroblast Intermediate Filament Proteins, Filament Proteins, Intermediate, Intermediate Filament Proteins