Fig. 4

Plasma ACTH and serum corticosterone. (A) Difference in plasma ACTH levels among all groups. **P < 0.001 vs. controls, +P < 0.05 vs. TNBS. (B) Difference in serum corticosterone levels among all groups. **P < 0.001 vs. controls, +P < 0.05 vs. TNBS