Table 3.

MC impact on the number of dead cells in rats' hippocampi (CA1, CA3, and DG regions).

Group outcome	Mean ± SD
	C	200	500	F	F200	F500
CA1 area	0.22 ± 0.15	0.31 ± 0.23∗	0.24 ± 0.21	5.72 ± 1.11∗∗∗	0.89 ± 0.36∗	0.25 ± 0.19
CA3 area	0.11 ± 0.22	0.22 ± 0.22∗	0.09 ± 0.07	4.61 ± 1.46∗∗∗	0.76 ± 0.50∗	0.43 ± 0.19
Dentate gyrus	0.21 ± 0.13	2.62 ± 1.95∗	0.08 ± 0.09	10.57 ± 2.54∗∗∗	4.62 ± 0.76∗	0.59 ± 0.38

C: control group; F: formaldehyde-treated group; 200: 200 mg/kg MC-treated group; 500: 500 mg/kg MC-treated group; F200: formaldehyde plus 200 mg/kg MC-treated group; F500: formaldehyde plus 500 mg/kg MC-treated group. ^∗P < 0.05 F200 group versus F group; ^∗∗P < 0.001 C, MC200, MC500, and F500 groups versus F group.