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. 2022 Apr 21;23(9):4586. doi: 10.3390/ijms23094586

Figure 5.

Figure 5

Use of DNA polymerases to repair DNA ends before NGS adapter ligation leads to the incorporation of errors in the synthesized complementary DNA strand, which is opposite to the damaged sites, when filling in 5′-protruding ends or single-strand gaps, or when strand resynthesis is initiated from nicks in DNA. Substitution of DNA polymerases by single-strand-specific nucleases helps avoid this problem.