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Analgesic effects induced by EA in goats (mean ± SD, %, n = 3). The nociceptive thresholds were measured with potassium iontophoresis. Nociceptive threshold increased at 0 and 4 h after EA stimulation. Goats in the control group were restrained as goats in EA group without needling and electricity. The significance of differences (** p < 0.01, * p < 0.05) was calculated by a t-test. The grey dots represent the control group. The black dots represent EA group.
