Evidence-Based Complementary and Alternative Medicine / 2012 / Article / Fig 2

Research Article

Effects of Electroacupuncture of Different Frequencies on the Release Profile of Endogenous Opioid Peptides in the Central Nerve System of Goats

Figure 2

Pain threshold of goats stimulated by different frequencies ( , %, ). The same letter indicated that no significant difference in pain threshold between two frequencies ( ), and different letter indicated significant difference ( ).

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