Types of Intermediate
filaments
n I and II: Acidic keratins and Basic
keratins
n III: Vimentin; Desmin; Glial fibrillary
acidic protein (GFAP); peripherin
n IV: Neurofilament (L, M, H); Internexin
n Nonstandard IV: Filensin and phakinin in
lens fiber cells
n V: Nuclear lamins A, B, and C