**5.9 Comparison of the variable experimental groups' head dip frequency in the elevated plus maze test**

The mean ± SEM head dip frequency for the control, CdCl2 (14 days), CdCl2 (28 days), CdCl2 + Zinc, and CdCl2 + Vitamin E were 11.00 ± 2.70, 14.40 ± 1.72, 17.00 ± 1.12, 8.00 ± 1.22, and 9.80 ± 1.16, respectively.

The results showed that there was no discernible difference in the frequency of head dips between groups (see **Table 2**)*.*
