we analyzed expression of the following markers by immunocytochemistry : glioma-specific antigens ( ge2 and cg12 ) , fibronectin , intermediate filaments ( gfap , vimentin , neurofilaments ) , class i and ii histocompatibility antigens ( hla-abc and hla-dr ) , growth factor and receptor ( alpha tgf and egf-receptor ) , proliferation-associated antigen ( ki-67 ) .
C0021770
intermediate filaments
C0017626
gfap