PECAM1 and glioblastoma: The effects of nanostructured materials on the neoangiogenic process in GBM tumors induced in animal models were commonly evaluated by VEGF [32,57,58,63,68,69], and CD31 [34,43,44,45,50,51,52,53,54,56,57,59,60,61,62,64,65,66], as shown in Table 5.