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High-fidelity gene targeting in embryonic stem cells by using sequence replacement vectors.

机译:通过使用序列替换载体将高保真基因靶向胚胎干细胞。

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Mutations were targeted to the Hprt locus in murine embryonic stem cells by using sequence replacement vectors. When the vector was designed such that the mutated sequences were flanked on both sides by several kilobases of DNA homologous to the target locus, replacement of chromosomal sequences with the exogenous DNA occurred with precision. If, on the other hand, the target-homologous DNA on one arm of the vector was reduced to below 1 kb in length, the fidelity of recombination was diminished.
机译:通过使用序列替换载体,将突变靶向鼠胚胎干细胞中的Hprt基因座。当设计载体以使突变序列的两侧侧接与靶基因座同源的几千个碱基的DNA时,精确地发生了用外源DNA置换染色体序列。另一方面,如果载体的一个臂上的靶同源DNA的长度减少到1kb以下,则重组的保真度降低。

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