Genetic Knockout of TE Insertions by CRISPR-Cas9.

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Transposable elements (TEs) are abundant in the genome, and specific insertions may be co-opted to act as coding or noncoding functional elements. CRISPR-based genome editing technologies enable functional studies of TE insertions in cell lines. Here, we describe the use of CRISPR-Cas9 to create and validate genetic knockouts of TEs in mammalian cell lines.