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Effect of EA of ST36-GB34 on pain scores in CCI rats of different groups. Thermal pain thresholds after injury and EA are presented as mean ± SD (n = 11 in each group; ∗ P < 0.05 compared with the sham control group; ☆ P < 0.05, compared with the CCI group; △ P < 0.05, compared with the CCI + EA2D group; ⋄ P < 0.05, compared with the CCI + EA1W group). Pain score = the paw withdrawal latency (PWL) of the healthy side (right) – PWL of the affected side (left).
