Fig. 2.

Plasma corticosterone concentrations. At 21 and 42 days after surgery, concentrations of plasma corticosterone in the three groups that underwent restraint stress (RS) were significantly increased compared with the naive group (p < 0.05). *p < 0.05 compared with the naive group. At 42 days, concentrations of plasma corticosterone in the three groups that underwent RS were significantly increased compared with the three groups that did not undergo RS (p < 0.05)