Rats received constant ICV infusions of either a rat neutralizing antibody (anti-IL-6) or a control IgG and were subjected to 1 or 14 days CIC. No Stress animals are indicated by NS. All groups received the drug treatments for the same length of time. Rats were sacrificed at the end of 6h cold exposure. CORT (panel A, n= 5-7) and ACTH (panel B, n= 5-8) were measured in the plasma and P-STAT3 levels (panel C, n= 5-6) were measured in hypothalamus lysates. * significantly different from NS within the same drug treatment, # significantly different from CIC-14d IgG, $ significant Main Effect of Antibody, p<0.05, Newman-Keuls post-hoc test.