7Kawahata A, Manabe S, Manabe Y, et al. Effect of topical administration of L - arginine on formalin - induced nociception in the mouse: A dual role of peripherally formed NO in pain modulation[J]. Br J Pharmacol, 1994, 112:547 - 550.
8Song BW, Ma WG.The study on the analgesic situation and mechanism of Luding[J]. J Anhui Med Univer, 1996, 31(3): 46-47.