1. Introduction 2. Materials 3. Methods 4. Notes Preparation of Probes and Competitors Optimization of Reaction Parameters Controls for Specificity Electrophoretic Conditions Extended Applications References 从原理，材料，方法步骤，注意点都有系统介绍，尤其是注意部分非常细，而且有推荐的实验设计，插图，值得参考   EMSA.pdf