Table 2. Endothelial cell apoptosis index and the OD rate of endothelial marker VIII factor.

Group	I	II	III	IV	V
TUNEL	0.58±0.02	0.41±0.03*	0.30±0.04*#	0.21±0.03*#&	0.12±0.03*#&▲
VIII	0.10±0.02	0.17±0.01*	0.23±0.01*#	0.28±0.01*#&	0.35±0.02*#&▲

TUNEL gradually decreased as indicated by the number of embolizations and time after embolization, while the expression of endothelial marker VIII factor displayed an opposite trend. *, P<0.05 compared to group I; ^#, P<0.05 compared to group II; ^&, P<0.05 compared to group III; ^▲, P<0.05 compared to group IV (I, control group; II, one week after the first embolization; III, one week after the 2^nd embolization; IV, one week after the 3^rd embolization; V, three weeks after the 3^rd embolization). OD, optical density.