FLT1 and neoplasm: At day 7, FLT tumor accumulation was affected in treated xenografts in a dose dependent manner, but the difference between the different treatment regimens was significant only for the Gli36dEGFR-1 and not for the Gli36dEGFR-2 xenografts (Kruskal-Wallis One Way Analysis; P = 0.006, P = 0.114, respectively).