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将反向选择标记基因导入受体细胞,在一定的筛选条件下,带有反向选择标记基因的细胞株不能生长,而不带有反向选择标记基因的细胞株则能够生长,从而对目的基因的转化子进行无选择标记的筛选。
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assembly modeling
Assembly of First Nations
assembly of five planets
assembly order planning
assembly positioning method
assembly principle
assembly process
assembly process and equipment
assembly process equipment
assembly processing simulation technology
assembly process layout system
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assembly process system
assembly quality control
assembly reactions of cell metabolism
assembly robot
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