Fig. 3. Effects of electroacupuncture (EA) pretreatment per se or electroacupuncture pretreatment plus lipopolysaccharide (LPS) on serum corticosterone levels. Electroacupuncture pretreatment does not increase serum corticosteroid in rats exposed to LPS. In control rats not exposed to LPS, electroacupuncture at either Hegu or nonacupoints (sham) significantly decreases serum corticosterone levels. Data are mean ± SD, n = 10 per group. *P < 0.05 versus control rats not receiving LPS; #P < 0.05 versus LPS alone.