Table 1.
Effect of green tea (GT) or epigallocatechin gallate (EGCG) on gamma-radiation-induced histological changes of dentate gyrus

Groups	TUNEL	Ki-67	Dcx
NC	0	9.57 ± 0.64	46.86 ± 3.04
RC (2.0 Gy)	18.50 ± 1.60	2.86 ± 0.61	19.57 ± 2.10
GTa + R	12.25 ± 1.45*	3.50 ± 0.65	28.50 ± 2.39*
GTb + R	9.00 ± 2.42*	3.67 ± 1.04	20.33 ± 2.35
EGCGc + R	12.50 ± 1.50*	2.75 ± 0.25	25.75 ± 2.13

The ICR mice (n=4) were irradiated with gamma-rays (2.0 Gy) and were autopsied 12 hours later.
Values are expressed as mean ± S.E.
GT (50 mg/kg of body weight) was given i.p. at 36 and 12 hours before irradiation, and 30 minutes after irradiation.
GT (250 mg/kg of body weight/day) was given p.o. for 7 days before autopsy.
EGCG (25 mg/kg of body weight) was given i.p. at 36 and 12 hours before irradiation, and 30 minutes after irradiation.
Indicates a significant difference at P<0.05 compared with corresponding radiation control group.