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转染(transfection)专指感受态的大肠杆菌细胞捕获和表达噬菌体DNA分子的生命过程。从本质上讲，和转化没有根本的区别。无论是转染还是转化，其关键因素都是用氯化钙处理大肠杆菌细胞，以提高细胞膜的通透性，从而使外源DNA分子能够容易进