intermediate filament proteins and actin isoforms of a series of 12 malignant hemangiopericytomas and five glomus tumors were examined by light microscopy , transmission electron microscopy , two-dimensional gel electrophoresis ( 2d-ge ) , and by immunohistochemistry , the latter using monoclonal or affinity-purified polyclonal antibodies to desmin , vimentin , cytokeratins , alpha-smooth muscle , and alpha-sarcomeric actins .
C0021769
intermediate filament proteins
C0042666
vimentin