Research Article

Electroacupuncture Pretreatment at GB20 Exerts Antinociceptive Effects via Peripheral and Central Serotonin Mechanism in Conscious Migraine Rats

Figure 4

Effect of EA pretreatment on 5-HT level of peripheral serum in conscious migraine rats. 5-HT levels of jugular venous blood samples were determined by radioimmunoassay (RIA) method. Data are mean concentration (ng/mL) ± SD ( for each group). , Model versus Control. , EA versus Model. , SA versus EA.