Table 2:

Types and distribution of intermediate filament proteins

Intermediate Filament Protein	Class	Cell Type
Acidic cytokeratin	I	Epithelial cells
Neutral-basic cytokeratins	II	Epithelial cells
Vimentin	III	Mesenchymal cells
Glial fibrillary acidic protein	III	Astroglial cells
Desmin	III	Muscle cells
Synemin	III	Skeletal muscle cells
Peripherin	III	Neurons
Nestin	IV	CNS and muscle precursor cells
Neurofilaments	IV	Neurons
Internexin	IV	Neurons
Lamins	V	Ubiquitous
Filensin, phakinin	Not classified	Lens
Transitin	Not classified	Radial glial cells