1. Objective: To study the skin irritation and allergia of Ai tong Ning plaster.
   目的:研究观察癌痛宁巴布剂的皮肤刺激性和致敏性。
2. Conclusions: IPO has no irritability and allergia, least or no toxicity, but better functions of anti-inflammation, abirritation and detumescence as well as high safety in administration.
   结论：伤痛膏有较好的抗炎、镇痛、消肿作用，无刺激性和过敏性，毒性极小或无毒性，用药安全性高。

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