Tonofibril
From Wikipedia, the free encyclopedia
Tonofibrils are cytoplasmic protein structures in epithelial tissues that converge at desmosomes and hemidesmosomes.[1] They consist of fine fibrils in epithelial cells that are anchored to the cytoskeleton.[2] They were discovered by Rudolf Heidenhain, and first described in detail by Louis-Antoine Ranvier in 1897.[3]