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Fig. 2 | The Journal of Physiological Sciences

Fig. 2

From: Influence of exogenous and endogenous estrogen on thermoregulatory responses to mild heat and the interaction with light and dark phases

Fig. 2

Abdominal temperature (Tabd) during heat exposure in the ovariectomized (OVX) and OVX + estradiol (E2) groups (open and closed circles, respectively) in the light (a) and dark (c) phases, and in the D and P groups (open and closed squares, respectively) in the light (b) and dark (d) phases. The control data are indicated by solid and dashed lines without symbols (OVX and OVX + E2 groups in a and c, respectively, and D and P groups in b and d, respectively). Differences in Tabd at the same time of day between the heat exposure and control days are presented as H-C (a′–d′ in the light and dark phases in Experiments 1 and 2, respectively). Data are presented as means ± standard error (a and c, n = 7 in each group; b and d, n = 5 in each group). *Significant difference between the OVX and OVX + E2 groups (P < 0.05). Significant difference between the D and P groups (P < 0.05). §Significant difference between the light and dark phases (P < 0.05). #Significant difference from the value at an ambient temperature (Ta) of 28 °C (P < 0.05). D, control rats in the diestrus phase; P, control rats in the proestrus phase

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