Table 2.

Effect of As₂O₃ on microvessel density and VEGF expression in tumor xenografts (n = 10, mean ± SD)

Group	MVD	VEGF
Control	9.32 ± 0.33	49.23 ± 2.12
2.5 mg/kg	5.36 ± 0.32b	20.07 ± 1.19b
5 mg/kg	3.05 ± 0.24bd	11.93 ± 1.07bd
F	111.841	163.461
P	< 0.001	< 0.001

^bP < 0.01 vs Control;

^dP < 0.01: vs 2.5 mg/kg.