the expression of factor viii/von willebrand factor ( fviii/vwf ) , a marker for endothelial cells , and of glial fibrillary acidic protein ( gfap ) , a marker for glial cells , was examined in 10 glioblastomas and seven mixed glioma-sarcomas using the peroxidase-antiperoxidase immunohistochemical technique .
C0027836
glial cells
C0017636
glioblastomas