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Effect of EA stimulation of Futu (LI18), Hegu (LI4)-Neiguan (PC6), and Zusanli (ST36)-Yanglingquan (GB34) on thermal pain thresholds (PT) in rats with neck incision pain (n = 8 in each group). Pain thresholds were measured at the time-points of pre-incision, 4 h post incision, and post-EA, and data are expressed as mean ± SD. ⋆ P < 0.05, compared with the normal group; ▲ P < 0.05, compared with the model group (after neck incision).
