
Platelet-derived growth factor expression correlates with tumor grade and proliferative activity in human oligodendrogliomas
Keywords: ABC; avidin-biotin complex; bFGF; basic fibroblast growth factor; DAB; 3,3-diaminobenzidine tetrahydrochloride; EGF; epidermal growth factor; H&E; hematoxylin and eosin; IGF-1; insulinlike growth factor 1; LI; labeling index; NGF; nerve growth factor; PCN