FLI1 and glioblastoma: Tg(fli1:EGFP) strain facilitates the investigation of blood vessels development, outlining the endogenous vasculature with enhanced green fluorescent protein (EGFP) and has been broadly utilized for GBM zebrafish xenotransplantation models (n = 11) to study angiogenesis and metastasis [22, 42–51].