302693.fig.002a
(a)
302693.fig.002b
(b)
Figure 2: The levels of cortisol and adrenocorticotropic hormone in serum. Shown are the levels of cortisol (Cor, in (a)) and adrenocorticotropic hormone (ACTH, in (b)) in the serum of rats in the psychological group (PS) and control group (CON). Data were expressed as 𝑋 ± SE and analyzed in eight rats from each group (*P <   .05, PS group versus CON group).