two-dimensional gel electrophoresis of intermediate-sized filament-enriched cytoskeletons of epithelial monkey kidney tc7 cells has shown that they are composed of at least two keratins ( isoelectric focusing 36 , mr = 48,500 ; ief 46 , mr = 43,500 ; hela protein catalogue number ) and vimentin .
C0021770
intermediate
C0042666
vimentin