Effects of Tualang honey and E2 on brain oxidant/antioxidant level/activity. (a) Mean SOD activity was significantly increased in stressed OVX rats treated with either E2 or Tualang honey compared with untreated stressed OVX. (b) Mean CAT activity was significantly decreased in stressed OVX rats treated with either E2 or Tualang honey compared with untreated stressed OVX. (c) Mean GR activity was significantly increased in stressed OVX rats treated with either E2 or Tualang honey compared with untreated stressed OVX. (d) Mean GPx activity was significantly increased in stressed OVX rats treated with either E2 or Tualang honey compared with untreated stressed OVX. (e) Mean GST activity was significantly increased in stressed OVX rats treated with either E2 or Tualang honey compared with untreated stressed OVX. (f) Mean TAC level was significantly increased in stressed OVX rats treated with either E2 or Tualang honey compared with untreated stressed OVX. (g) Mean PCO level was significantly decreased in stressed OVX rats treated with either E2 or Tualang honey compared with untreated stressed OVX. (h) Mean MDA level was significantly decreased in stressed OVX rats treated with either E2 or Tualang honey compared with untreated stressed OVX. The data are shown as means ± S.E.M. *P < 0.05 **P < 0.001 denote significantly different values from stressed OVX group. ^#P < 0.05 ^##P < 0.001 denote significantly different values from nonstressed sham-operated control group.