Table 1.

Percentage of hippocampal cells positive of Fas, Bcl-2 and Caspase-3 in rats with morphine addiction (n=8, x̅±s, %)

Group	Fas	Bcl-2	Caspase-3
Morphine-dependent	11.39±2.42**	7.95±2.81**	20.24±2.37**
Morphine-abstinent	11.09±2.57*	8.10±2.42*	22.13±2.46*
Control	7.07±2.24	10.96±2.18	8.21±2.33

^* P<0.05,

^** P<0.01 vs control group.