〔Abstract〕 Objective To observe the effect of electroacupuncture on Zusanli, Guanyuan acupoints on expression of Transforming growth factor-βactivation of Protein kinase (TAK1) in articular synovial cell of rats with adjuvant-induced arthri-tis (AIA), and explore the possible intervention mechanisms of electroacupuncture. Methods 40 SD rats were randomly divided into blank group, model group, Methotrexate (MTX) group, the electroacupuncture group, 10 rats in each group. The A-IA model was made according to the Fueund's complete adjuvant (FCA...