Effect of EGCG treatment on (A) IL-1β, (B) IFN-γ and (C) TNF-α in model rats, as determined by ELISA. ##P<0.01 vs. sham control group; **P<0.01 vs. AIT + EGCG group. EGCG, (−)-epigallocatechin-3-gallate; AIT, autoimmune thyroiditis; IL-1β, interleukin-1β; IFN-γ, interferon-γ; TNF-α, tumor necrosis factor-α.