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1、40%丙烯酰胺【配制方法】 把380g丙烯酰胺（DNA测序级）和20g N，N’-亚甲双丙烯酰胺溶于总体积为600ml的蒸馏水中。继续按上述配制30%丙烯酰胺溶液的方法处理，但加热溶解后应以蒸馏水补足至终体积为1L。【注意】 见上述配制