下列技术依据D.NA.分子杂交原理的是（）①用D.NA.分子

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下列技术依据D.NA.分子杂交原理的是（  ）
①用D.NA.分子探针诊断疾病
②B.淋巴细胞与骨髓瘤细胞的杂交
③快速灵敏的检测饮用水中病毒的含量
④目的基因与运载体结合形成重组D.NA.分子
A.②③        B.①③
C.③④         D.①④

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