Table 2. The average optical density of the immunohistochemistry assay.

Group	Caspase-3		GFAP
	CA1 region	Cerebral cortex	CA1 region	Cerebral cortex
200 mg/kg/day	0.254 ± 0.00462	0.296 ± 0.03847	0.0208 ± 0.00192	0.0198 ± 0.00259
50 mg/kg/day Mel	0.0422 ± 0.00327	0.136 ± 0.0305	0.0146 ± 0.00365	0.012 ± 0.00255
DINP+Mel	0.134 ± 0.02966 (P < 0.01)	0.086 ± 0.02408 (P < 0.01)	0.018 ± 0.00158 (P < 0.05)	0.009 ± 0.00224 (P < 0.01)

P < 0.01/P < 0.05: Compared with the 200 mg/kg/day group.